GRASS.app 6.2 RC2. SQLite3 framework updated to 3.3.8. Postgres 8.1.5 + PostGIS 1.1.5.
There have been random problems with GRASS corrupting the Python environment (ie the sys.path). This shouldn't happen, and usually a logout/login or restart clears it up. I have no idea so far what's going on.
There has also been some confusion on installing the frameworks from the All Frameworks convenience download. Don't copy the contents of the disk image to /Library/Frameworks, dig into each folder to get the frameworks. I've renamed the folders, so it should be less confusing now. I'm considering installers, but I don't think that will make the All Frameworks package much simpler to install.