Long post here in case it means anything to someone, not sure what’s up. Tried yesterday’s and today’s nightlies, 19th and 20th, Weirdness, New profile didn’t help.

I found I had a bunch of the Profile components somehow at the root level of OSX (looked because I kept getting the message that Firefox was already open, although Force Quit couldn’t find it, and the problem survived rebooting OSX.
I trashed them all, emptied the trash, rebooted, trashed the Firefox folder from Application Support, downloaded the app again

Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8b4) Gecko/20050820 Firefox/1.0+

New profile.

This in Javascript Console:

Error: Warning: unrecognized command line flag -psn_0_4194305

Source File: file:///Users/hank/Applications/DeerPark.app/Contents/MacOS/components/nsBrowserContentHandler.js
Line: 491

Opened Burningedge, nothing else:

Error: Error in parsing value for property ‘cursor’. Declaration dropped.
Source File: http://www.google.com/search?q=burningedge&start=0&start=0&ie=utf-8&oe=utf-8&client=firefox&rls=org.mozilla:en-US:unofficial
Line: 21

Error: Selector expected. Ruleset ignored due to bad selector.
Source File: http://www.google.com/search?q=burningedge&start=0&start=0&ie=utf-8&oe=utf-8&client=firefox&rls=org.mozilla:en-US:unofficial
Line: 25

Error: Unexpected end of file while searching for closing } of invalid rule set.
Source File: http://www.google.com/search?q=burningedge&start=0&start=0&ie=utf-8&oe=utf-8&client=firefox&rls=org.mozilla:en-US:unofficial
Line: 26

Tried adding extensions:
AdBlock will install; Aardvark just blinks.

Preferences has the icons across the top but a blank window, can’t change anything.
Oh well.

The Firefox opens but there are no Preferences available, just a blank window when I try Prefs.

Was able to drop back in my bookmarks from backed up profile, but not get rid of the default prefs the app comes with.

No good.