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TOPIC: Installation Fails

Installation Fails 07 Aug 2016 15:33 #7437

Getting repeated message that installation fails. Running OS 10.11.6 on a MacBook Pro Retina (mid-2015) with SSD drive. TechTool Pro 8 ran fine. Have restarted and find same result with no other apps running during the installation.
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Installation Fails 07 Aug 2016 15:40 #7438

Try downloading the installer again, from your Available Downloads, at the bottom of the My Account page, linked above. If that does not work, please send a message to This email address is being protected from spambots. You need JavaScript enabled to view it. , including a link to this thread. You will receive a reply by email on Monday, and may be asked to send in some log files that may have error messages that show why the installer is failing. The installer is Apple's installer.

One thing you could try, in case the installation is failing because it cannot remove TechTool Pro 8: run the TechTool Pro 8 installer, and use its Customize button to uninstall TechTool Pro 8. Before doing that, make a screen capture of the Email Notices pane of the TechTool Protection system preferences pane.

At the moment, I cannot think of a good application that uses Apple's installer and has a free demo. If you can think of one, see if its installer works, to help us to determine whether the problem is with the way Apple's installer code is running on your MacBook Pro Retina model, or is something specific to the TechTool Pro 9.0.1 installer.
MicroMat Inc
Makers of TechTool
Last Edit: 07 Aug 2016 15:49 by micromattech3.
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Installation Fails 07 Aug 2016 15:45 #7439

If the error message looks like the dialog box shown in the attachment below (except for the program name and graphic, which are irrelevant):




There are some users who are missing a file that the system software uses to run the installer as a root process. You can tell if you have the file by launching Terminal, located in /Applications/Utilities, and typing at the prompt:

sudo whoami

Press the return key.

If you get an error message about the sudoer file not being present, the most straightforward solution is to reinstall Mac OS X. You cannot restore the file from a backup because without the file being present, you cannot give yourself permission to install a copy from the backup.



The warning about the sudo command is displayed the first time it runs, because Apple put it there or left it there. Apple itself has KnowlegeBase articles that require the use of Terminal.
Attachments:
MicroMat Inc
Makers of TechTool
Last Edit: 23 May 2017 15:28 by micromattech3.
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Installation Fails 07 Aug 2016 15:49 #7440

Terminal replies

sudo: unable to stat /etc/sudoers: Permission denied
sudo: no valid sudoers sources found, quitting
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Installation Fails 07 Aug 2016 15:56 #7441

It appears that the sudoers file is missing. You can check it directly in Terminal by first changing the directory being examined to the /etc directory, and then listing the files.

Type:

cd /etc

Press the return key.

Example:

Macintosh:/ MMT3$ cd /etc
Macintosh:etc MMT3$

Next, type:

ls -lias

Press the Return key.

The end of the output should show the sudoers file:
7704981   0 -r--r-----    1 root  wheel     257 Jul 25  2015 sudo_lecture
6080966   0 -r--r-----    1 root  wheel    1275 Sep  9  2014 sudoers
6080927   0 -rw-r--r--    1 root  wheel      96 Sep  9  2014 syslog.conf
6080926   0 -rw-r--r--    1 root  wheel    1316 Sep  9  2014 ttys
6991704   0 -rw-r--r--    1 root  wheel    1316 Sep  9  2014 ttys~previous
 163566   0 drwxr-xr-x    2 root  wheel      68 Feb  3  2007 xinetd.d-migrated2launchd
6080925   0 -rw-r--r--    1 root  wheel       0 Sep  9  2014 xtab
6080970   0 -r--r--r--    1 root  wheel     126 Sep  9  2014 zshenv
MicroMat Inc
Makers of TechTool
Last Edit: 07 Aug 2016 16:00 by micromattech3.
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Installation Fails 07 Aug 2016 20:34 #7443

Was not able to figure out exactly what Terminal commands to use so have not checked this... BUT, when I looked in my Applications folder to see if TechTool 8 was still there, what did I find but TechTool Pro 9 (Version 9.0.1 (2634-efdf896), seemingly fully functional (I've run a full Check Computer off my newly TechTool 9 drive) despite the fact that the Apple Installer indicated a failure multiple times. Before getting your first reply this morning, I did send the issue to your help address, and appended there are the installer logs showing the failure in case you want to try to investigate further why an installed program generated an error message.
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Installation Fails 07 Aug 2016 23:46 #7445

Thanks for your clear and detailed explanation, and for your cooperation in sending in the log files.
MicroMat Inc
Makers of TechTool
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Installation Fails 23 May 2017 15:38 #8243

Last login: Tue May 23 11:12:26 on console
iMac-5K:~ mcmillan$ sudo whoami
sudo: unable to stat /etc/sudoers: Permission denied
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin
iMac-5K:~ mcmillan$

then I entered the following

cd/etc
-bash: cd/etc: No such file or directory
iMac-5K:~ mcmillan$

Now what do I do? Reinstall Sierra?
Many thanks micromattech3
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Installation Fails 23 May 2017 15:45 #8244

I just checked my Application folder and ran the TechTool Pro 9 app I saw there. I did have the previous 9.
Imagine my surprise when I was asked for my Serial number and I entered the one at the bottom of my email.
There I was looking at 9.5.1 (3131-fc796a5)
I was asked to update my preference pane which I did and it all appears to be OK.

That is VERY strange indeed.

I look forward to hearing what might have caused this issue.
My faith in Micromat was somewhat shaken but micromattech3 has impressed me with his/her helpfulness.
Thank you!
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Installation Fails 23 May 2017 15:46 #8245

You are welcome, and thanks for the good news.

It appears that you made a slight error in attempting to examine the /etc directory.

The command goes like this:

Type:

cd

then press the spacebar.

Type:

/etc

Press the Return key.

Copy this text, paste it into Terminal, and press the Return key

ls -lias

It appears on the basis of the "sudo: no valid sudoers sources found, quitting" output that you have no sudoers file. The simplest solution is to reinstall OS X.

If you have a Recovery HD volume and Time Machine, boot from the Recovery HD volume, download Sierra from Apple using the menu choice to reinstall the system software, and then let your user files, preferences, and applications be transferred from the Time Machine backup after you restart. An up-to-date clone of your usual startup volume can be used instead of Time Machine, but for some undisclosed reason Apple prefers Time Machine.
MicroMat Inc
Makers of TechTool
Last Edit: 23 May 2017 15:50 by micromattech3.
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Installation Fails 23 May 2017 15:49 #8246

I wish I could explain why you apparently got an erroneous error message about the installation having failed when it did not.

I think it would be worth checking to make sure the sudoers file is present. All programs that use Apple's installer and require root access need a functioning sudoers file.
MicroMat Inc
Makers of TechTool
Last Edit: 23 May 2017 17:04 by micromattech3.
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Installation Fails 23 May 2017 16:10 #8247

I followed you instructions [thanks!] and the following is my result [which means nothing to me at all!]

Last login: Tue May 23 11:33:05 on ttys000
iMac-5K:~ mcmillan$ cd /etc
iMac-5K:etc mcmillan$ ls -lias
total 1360
16218974 0 drwxr-xr-x 127 root wheel 4318 May 23 11:11 .
15806130 0 drwxr-xr-x@ 6 root wheel 204 Sep 20 2016 ..
1875989 8 -rw
1 root wheel 24 Oct 1 2015 AFP.conf
1875990 0 -rw-r--r-- 1 root wheel 515 Aug 22 2015 afpovertcp.cfg
16218975 0 -rw-r--r-- 1 root wheel 515 Jul 30 2016 afpovertcp.cfg~orig
16218976 8 lrwxr-xr-x 1 root wheel 15 Sep 20 2016 aliases -> postfix/aliases
16218977 0 -rw-r
1 root wheel 16384 Jul 30 2016 aliases.db
16218978 0 drwxr-xr-x 11 root wheel 374 May 17 21:59 apache2
16219013 0 drwxr-xr-x 33 root wheel 1122 Sep 20 2016 asl
16219044 0 -rw-r--r-- 1 root wheel 1051 Jul 30 2016 asl.conf
16219045 0 -rw-r--r-- 1 root wheel 149 Aug 29 2016 auto_home
1875994 0 -rw-r--r-- 1 root wheel 194 Aug 26 2015 auto_master
16219046 0 -rw-r--r-- 1 root wheel 194 Aug 29 2016 auto_master~orig
16219047 0 -rw-r--r-- 1 root wheel 1935 Aug 29 2016 autofs.conf
16219048 0 -r--r--r-- 1 root wheel 265 Jul 30 2016 bashrc
16219049 8 -rw-r--r-- 1 root wheel 8909 Jul 31 2016 bashrc_Apple_Terminal
14526815 0 -r--r--r-- 1 root wheel 265 Jul 30 2016 bashrc~previous
16219050 0 -rw-r--r-- 1 root wheel 780 Aug 29 2016 com.apple.IPConfiguration.plist
24739773 0 -rw-r--r-- 1 root wheel 82 Mar 6 14:12 com.apple.screensharing.agent.launchd
1875999 0 -rw-r--r-- 1 root wheel 189 Aug 22 2015 csh.cshrc
16219052 0 -rw-r--r-- 1 root wheel 189 Jul 30 2016 csh.cshrc~orig
1876000 0 -rw-r--r-- 1 root wheel 121 Aug 22 2015 csh.login
16219053 0 -rw-r--r-- 1 root wheel 121 Jul 30 2016 csh.login~orig
1876001 0 -rw-r--r-- 1 root wheel 39 Aug 22 2015 csh.logout
16219054 0 -rw-r--r-- 1 root wheel 39 Jul 30 2016 csh.logout~orig
16219055 0 drwxr-xr-x 18 root _lp 612 May 23 09:40 cups
16219064 0 drwxr-xr-x 3 root wheel 102 Jul 30 2016 defaults
16219066 0 -rw-r--r-- 1 root wheel 2378 Aug 5 2016 dnsextd.conf
1876003 0 -rw-r--r-- 1 root wheel 1029 Aug 22 2015 efax.rc~previous
16219067 0 drwxr-xr-x 4 root wheel 136 Jul 30 2016 emond.d
1876004 0 -rw-r--r-- 1 root wheel 0 Aug 22 2015 find.codes
16219071 0 -rw-r--r-- 1 root wheel 0 Jul 30 2016 find.codes~orig
16219072 0 -rw-r--r-- 1 root wheel 150 Jul 30 2016 fstab.hd
14526839 0 -rw-r--r-- 1 root wheel 150 Jul 30 2016 fstab.hd~previous
16219073 0 -rw-r--r-- 1 root wheel 54 Jul 30 2016 ftpd.conf
16219074 0 -r--r--r-- 1 root wheel 54 Jul 30 2016 ftpd.conf.default
1876008 0 -rw-r--r-- 1 root wheel 119 Aug 22 2015 ftpusers
16219075 0 -rw-r--r-- 1 root wheel 119 Jul 30 2016 ftpusers~orig
1876009 0 -rw-r--r-- 1 root wheel 5678 Aug 22 2015 gettytab
16219076 0 -rw-r--r-- 1 root wheel 5678 Jul 30 2016 gettytab~orig
16219077 0 -rw-r--r-- 1 root wheel 2600 Jul 30 2016 group
14526844 0 -rw-r--r-- 1 root wheel 2600 Jul 30 2016 group~previous
1876012 0 -rw-r--r-- 1 root wheel 214 Aug 22 2015 hosts
16219079 0 -rw-r--r-- 1 root wheel 0 Jul 30 2016 hosts.equiv
16219078 0 -rw-r--r-- 1 root wheel 213 Jul 30 2016 hosts~orig
16219080 0 -r--r--r-- 1 root wheel 1299 Jul 30 2016 irbrc
16219081 0 -rw-r--r-- 1 root wheel 0 Jul 30 2016 kern_loader.conf
14526848 0 -rw-r--r-- 1 root wheel 0 Jul 30 2016 kern_loader.conf~previous
1876017 8 -rw
1 root wheel 2273 Sep 20 2016 krb5.keytab
1876018 8 -rw
1 root wheel 1946 Sep 28 2015 krb5.keytab~orig
16238548 8 lrwxr-xr-x 1 root wheel 36 Sep 20 2016 localtime -> /usr/share/zoneinfo/America/New_York
1875392 8 lrwxr-xr-x 1 root wheel 36 Nov 2 2015 localtime~orig -> /usr/share/zoneinfo/America/New_York
16219083 0 -rw-r--r-- 1 root wheel 616 Jul 30 2016 locate.rc
16219084 0 drwxr-xr-x 2 root wheel 68 Aug 5 2016 mach_init.d
16219085 0 drwxr-xr-x 2 root wheel 68 Aug 5 2016 mach_init_per_login_session.d
16219086 0 drwxr-xr-x 2 root wheel 68 Aug 5 2016 mach_init_per_user.d
1876020 0 -rw-r--r-- 1 root wheel 106 Aug 22 2015 mail.rc
16219087 0 -rw-r--r-- 1 root wheel 106 Jul 30 2016 mail.rc~orig
16219088 0 -rw-r--r-- 1 root wheel 4574 Jul 30 2016 man.conf
16219089 0 -rw-r--r-- 1 root wheel 36 Jul 30 2016 manpaths
1876023 0 -rw
1 root wheel 5644 Jun 11 2013 master.passwd
16219090 0 -rw
1 root wheel 6858 Jul 30 2016 master.passwd~orig
16219091 0 -rw-r--r-- 1 root wheel 11 Jul 30 2016 nanorc
1876026 0 -rw-r--r-- 1 root wheel 53 Aug 22 2015 networks
16219092 0 -rw-r--r-- 1 root wheel 53 Jul 30 2016 networks~orig
16219093 0 -rw-r--r-- 1 root wheel 1318 Jul 30 2016 newsyslog.conf
13892163 8 -rw-r--r-- 1 root wheel 1318 Sep 2 2016 newsyslog.conf.BACKUP
16219094 0 drwxr-xr-x 7 root wheel 238 Sep 13 2016 newsyslog.d
1876028 0 -rw-r--r-- 1 root wheel 43 Aug 22 2015 nfs.conf
16219100 0 -rw-r--r-- 1 root wheel 43 Jul 30 2016 nfs.conf~orig
16219101 0 -rw-r--r-- 1 root wheel 303 Jul 30 2016 notify.conf
16343152 8 -rw-r--r--@ 1 root wheel 30 Sep 22 2016 nsmb.conf
16219102 0 -rw-r--r-- 1 root wheel 414 Jul 30 2016 ntp-restrict.conf
1876031 8 -rw-r--r--@ 1 root wheel 23 Apr 21 2014 ntp.conf
1876032 8 -rw-r--r--@ 1 root wheel 22 Sep 11 2015 ntp.conf~orig
16219103 0 -rw-r--r-- 1 root wheel 23 Jul 30 2016 ntp_opendirectory.conf
16219104 0 drwxr-xr-x 9 root wheel 306 Sep 20 2016 openldap
16219147 0 drwxr-xr-x 22 root wheel 748 Dec 13 15:23 pam.d
1876034 0 -rw-r--r-- 1 root wheel 5264 Jun 11 2013 passwd
16219168 0 -rw-r--r-- 1 root wheel 6393 Jul 30 2016 passwd~orig
1876036 0 -rw-r--r-- 1 root wheel 45 Aug 22 2015 paths
16219169 0 -rw-r--r-- 1 root wheel 45 Jul 30 2016 paths~orig
16219170 0 drwxr-xr-x 5 root wheel 170 Jul 30 2016 periodic
16219188 0 drwxr-xr-x 3 root wheel 102 Jul 30 2016 pf.anchors
16219190 0 -rw-r--r-- 1 root wheel 1027 Jul 30 2016 pf.conf
16219191 24 -rw-r--r-- 1 root wheel 28311 Jul 30 2016 pf.os
16219192 24 -rw-r--r-- 1 root wheel 22724 Aug 8 2016 php-fpm.conf.default
31463882 64 -r--r--r-- 1 root wheel 73685 Feb 7 19:20 php.ini.default
1876041 56 -r--r--r-- 1 root wheel 69266 Feb 26 2015 php.ini.default-5.2-previous
14526960 56 -r--r--r-- 1 root wheel 72289 Aug 8 2016 php.ini.default-previous
1876040 56 -r--r--r-- 1 root wheel 69266 Aug 22 2015 php.ini.default-previous~orig
16219194 0 drwxr-xr-x 34 root wheel 1156 Sep 20 2016 postfix
16219216 0 drwxr-xr-x 2 root wheel 68 Aug 29 2016 ppp
1876042 0 -r--r--r-- 1 root wheel 189 Aug 22 2015 profile
16219217 0 -r--r--r-- 1 root wheel 189 Jul 30 2016 profile~orig
16219218 8 -rw-r--r-- 1 root wheel 6393 Jul 30 2016 protocols
14526985 8 -rw-r--r-- 1 root wheel 6393 Jul 30 2016 protocols~previous
16219219 0 drwxr-xr-x 4 root wheel 136 Jul 30 2016 racoon
16219222 0 -rw-r--r-- 1 root wheel 1560 Aug 5 2016 rc.common
14526989 0 -rw-r--r-- 1 root wheel 1560 Aug 5 2016 rc.common~previous
16219223 0 -rw-r--r-- 1 root wheel 5258 Aug 29 2016 rc.netboot
16219224 8 lrwxr-xr-x 1 root wheel 22 Sep 20 2016 resolv.conf -> ../var/run/resolv.conf
16219225 0 -rw-r--r-- 1 root wheel 0 Jul 30 2016 rmtab
16219226 0 -rw-r--r-- 1 root wheel 1735 Jul 30 2016 rpc
14526993 0 -rw-r--r-- 1 root wheel 1735 Jul 30 2016 rpc~previous
16219227 0 -rw-r--r-- 1 root wheel 891 Aug 29 2016 rtadvd.conf
14526994 0 -rw-r--r-- 1 root wheel 891 Aug 29 2016 rtadvd.conf~previous
16219228 0 drwxr-xr-x 7 root wheel 238 Jul 30 2016 security
16219234 480 -rw-r--r-- 1 root wheel 677972 Jul 30 2016 services
14527001 480 -rw-r--r-- 1 root wheel 677972 Jul 30 2016 services~previous
1876050 0 -rw-r--r-- 1 root wheel 179 Aug 22 2015 shells
16219235 0 -rw-r--r-- 1 root wheel 179 Jul 30 2016 shells~orig
16219236 0 drwxr-xr-x 4 root wheel 136 Jul 30 2016 snmp
16219239 0 drwxr-xr-x 15 root wheel 510 May 17 21:59 ssh
20430204 0 drwxr-xr-x 5 root wheel 170 May 17 21:59 ssl
16219243 0 -r--r
1 root wheel 257 Jul 30 2016 sudo_lecture
1876052 0 -r--r
1 root wheel 2299 Jul 10 2015 sudoers
16219245 0 drwxr-xr-x 2 root wheel 68 Jul 30 2016 sudoers.d
16219244 0 -r--r
1 root wheel 1563 Jul 30 2016 sudoers~orig
16219246 0 -rw-r--r-- 1 root wheel 96 Jul 30 2016 syslog.conf
13892160 8 -rw-r--r-- 1 root wheel 96 Sep 2 2016 syslog.conf.BACKUP
14527013 0 -rw-r--r-- 1 root wheel 96 Jul 30 2016 syslog.conf~previous
16219247 0 -rw-r--r-- 1 root wheel 1316 Jul 30 2016 ttys
14527014 0 -rw-r--r-- 1 root wheel 1316 Jul 30 2016 ttys~previous
16219248 0 -rw-r--r-- 1 root wheel 0 Jul 30 2016 xtab
16219249 0 -r--r--r-- 1 root wheel 126 Jul 30 2016 zprofile
16219250 0 -r--r--r-- 1 root wheel 140 Jul 30 2016 zshrc
iMac-5K:etc mcmillan$
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Installation Fails 23 May 2017 16:37 #8249

16219243 0 -r--r
1 root wheel 257 Jul 30 2016 sudo_lecture
1876052 0 -r--r
1 root wheel 2299 Jul 10 2015 sudoers
16219245 0 drwxr-xr-x 2 root wheel 68 Jul 30 2016 sudoers.d
16219244 0 -r--r
1 root wheel 1563 Jul 30 2016 sudoers~orig
16219246 0 -rw-r--r-- 1 root wheel 96 Jul 30 2016 syslog.conf
13892160 8 -rw-r--r-- 1 root wheel 96 Sep 2 2016 syslog.conf.BACKUP
14527013 0 -rw-r--r-- 1 root wheel 96 Jul 30 2016 syslog.conf~previous
16219247 0 -rw-r--r-- 1 root wheel 1316 Jul 30 2016 ttys
14527014 0 -rw-r--r-- 1 root wheel 1316 Jul 30 2016 ttys~previous
16219248 0 -rw-r--r-- 1 root wheel 0 Jul 30 2016 xtab
16219249 0 -r--r--r-- 1 root wheel 126 Jul 30 2016 zprofile
16219250 0 -r--r--r-- 1 root wheel 140 Jul 30 2016 zshrc
iMac-5K:etc mcmillan$
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Installation Fails 23 May 2017 16:43 #8251

You are welcome, and thanks for continuing to explore the problem.

Based on the Terminal output, you do have a sudoers file:

1 root wheel 2299 Jul 10 2015 sudoers
16219245 0 drwxr-xr-x 2 root wheel 68 Jul 30 2016 sudoers.d

However, the file may be damaged. You should be able to get the proper answer to the Terminal question:

sudo whoami

I suggest that you restart, and try the "sudo whoami" question again.

I vaguely recall one or two other people, a few years ago, reporting that they had seen the "Installation Failed" dialog box shown in the attachment above, only to find as you did that in fact the installation had been completed, and was successful. My interpretation of that result is that Apple's installer is erroneously reporting that it did not find a valid sudoers file, and proceeded to complete the installation. We provide the script and the files for the TechTool Pro installer, but the installer itself is an Apple application. These erroneous error messages are extremely rare.
MicroMat Inc
Makers of TechTool
Last Edit: 23 May 2017 16:43 by micromattech3.
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Installation Fails 23 May 2017 16:43 #8252

9.5 installed fine for me, but I've had this problem before with a previous installation. I have NOT replaced my sudoers file and other software installs with no problem. This only appears to be a Micromat issue, at least from my experience.
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Installation Fails 23 May 2017 16:47 #8253

Please see the message directly above yours.
MicroMat Inc
Makers of TechTool
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Installation Fails 23 May 2017 16:51 #8256

Thanks, yes I saw that. Just pointing out that even though you say it's an Apple problem, I've not experienced it with any other software from a wide variety of vendors. I don't understand the intricacies of these things, but that seems strange to me that a failure would only be reported -- at least in my experience -- with one company's product.
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Installation Fails 23 May 2017 16:53 #8257

True, but most installers do not require root access, because they put files only into locations that require administrative access or lower.
MicroMat Inc
Makers of TechTool
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The following user(s) said Thank You: Malmsey

Installation Fails 23 May 2017 16:55 #8258

Thanks for that further explanation... I said that I didn't understand these things! Anyway 9.5 installed with no problems for me.
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Installation Fails 23 May 2017 17:04 #8259

You are welcome.

I just discussed the "installation failed" error message with a colleague. It turns out that there are cases in which, technically, the installation failed, because one of the scripts did not run, typically the one that puts the TechTool Pro application icon in the Dock.

The correct answer to the "sudo whoami" question is "root". Whenever you use the "sudo" command, you are prompted to enter your administrative password. Once you do that, you are logged in as root, so when the "whoami" command runs, the answer returned is "root".
MicroMat Inc
Makers of TechTool
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Installation Fails 24 May 2017 22:11 #8269

Hi MMT3!

I left town just as your advice started in earnest yesterday and I have only just returned to my iMac5k.

Per your last advice I ran sudo whoami and received the following, deja vu, reply

Last login: Wed May 24 17:01:10 on console
iMac-5K:~ mcmillan$ sudo whoami
sudo: unable to stat /etc/sudoers: Permission denied
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin
iMac-5K:~ mcmillan$

Just for fun my son ran sudo whoami on his MBP and he received a password request and then root, as you predicted any normal person would.

So, am I correct in assuming that I have a sudoers issue of some kind and I should reinitialize my drive, reinstall Sierra and then run Migration Assistant off of a clone [Carbon Copy Cloner] to restore settings, files, apps etc? Or alternatively, I could create a TimeMachine back up on a spare drive and use that with Migration Assistant. I don't mind doing the later if it is "better" or more "kosher" so to speak. I will follow your advice.

I don't want to have [a] bad sudoers as it sounds like a source of bad karma!

I thought following up in this manner might provide a good conclusion for others who might have this issue and stumble upon this thread in hope of a solution.

Many thanks for your assistance and patience!
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Installation Fails 24 May 2017 22:21 #8271

You are welcome, and thanks for your kind comment.

I do believe that you have a problem with the sudoers file, and either of the approaches you suggested should solve the problem.

For some undisclosed (at least as far as I have seen) reason, Apple prefers to migrate files from a Time Machine volume. I have seen reports of a rare failure in which the oldest rather than the newest Time Machine backup was used, but that would not affect a case in which there was only one backup.
MicroMat Inc
Makers of TechTool
Last Edit: 24 May 2017 22:29 by micromattech3.
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Installation Fails 13 Oct 2017 23:32 #8683

I ran into this problem today. I failed the whoami test as well. What I did to fix it was to boot from an external drive, do a Carbon Copy Clone of the sudoer file only, from a 2016 boot drive backup to my normal startup drive. I then rebooted into my norman startup drive, uninstalled the failed TechTool Pro 9 files, and then reinstalled TechTool Pro 9 without a hitch. Hope it didn't screw up anything else, but I was on a tight deadline, and didn't want to do a full system install. I can always copy a recent backup on to my startup drive if any thing goes wrong. What do you think? Am I in trouble? Cheers, John www.micromat.com/components/com_kunena/t...moticons/shocked.png
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Installation Fails 13 Oct 2017 23:41 #8684

I suggest you change your screen name to something other than an email address. These forums are indexed by Google, and you might get a lot of spam. Use the My Account link at the top of the page, and then the Account Information link. Changing your screen name retroactively updates the screen name that appears in all of your postings.

Not only did you not do something wrong, I think you have found a breakthrough way of getting around the missing or damaged sudoers file. Usually, one cannot copy the file, because it requires root access to copy because of its permissions, and one cannot get root access if the sudoers file is damaged. I am now puzzled about why nobody thought of your solution involving Carbon Copy Cloner before. Congratulations!
MicroMat Inc
Makers of TechTool
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Installation Fails 13 Oct 2017 23:52 #8685

I suspect that many people who have clones have only an up-to-date clone, which has already had its sudoers file replaced by a damaged one in the source volume for the clone. It is really important to have a backup strategy that allows access to old versions of files:

11 Stupid Backup Strategies, by Joe Kissell
MicroMat Inc
Makers of TechTool
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