Testing has found no problem with running TechTool Protogo 3.0.2 under Mac OS X 10.8 (Mountain Lion).
The Protogo application has not changed, and the download still has TechTool Pro 6.0.4.
The user should replace the TechTool Pro application in the Protogo Applications folder with TechTool Pro 6.0.5 by launching the copy of TechTool Pro 6.0.4 in that folder and using "Check for Update" before using the Basic Profile.