7.0.2 just crashes constantly on startup! help!

Question

hi,
on my dual g5 powermac itunes 7.0.0 and 7.0.1 ran well.
after upgrading to 7.0.2 i cannot use itunes anymore because it just crashes everytime when i launch it.
after the first progress bar vanishes the main itunes window appears but then immediately another progress bar pops up as a modal window. so i can't do anything but wait. but after app. 2/3 of progress itunes crahes.
the crash log file, however, doesn't help (at least me) because it didn't dump a call stack of the thread that crashed (thread 0):
Host Name: Tigger
Date/Time: 2006-11-05 23:51:56.400 +0100
OS Version: 10.4.8 (Build 8L127)
Report Version: 4
Command: iTunes
Path: /Applications/iTunes.app/Contents/MacOS/iTunes
Parent: WindowServer [113]
Version: 7.0.2 (7.0.2)
Build Version: 2
Project Name: iTunes
Source Version: 7021501
PID: 452
Thread: 0
Exception: EXCBADACCESS (0x0001)
Codes: KERNINVALIDADDRESS (0x0001) at 0xfffdfffc
Thread 0 Crashed:
Thread 1:
0 libSystem.B.dylib 0x9000ab48 machmsgtrap + 8
1 libSystem.B.dylib 0x9000aa9c mach_msg + 60
2 com.apple.CoreFoundation 0x907dcb78 __CFRunLoopRun + 832
3 com.apple.CoreFoundation 0x907dc47c CFRunLoopRunSpecific + 268
4 com.apple.CoreFoundation 0x907eb8dc CFRunLoopRun + 52
5 com.apple.DVCPROHDMuxer 0x173c66d4 AVS::DestroyAVCDeviceController(AVS::AVCDeviceController*) + 392
6 libSystem.B.dylib 0x9002b508 pthreadbody + 96
Thread 2:
(excerpt)
so, anybody with an idea?
i used to have the iLike sidebar installed but trahed that file (~/Library/iTunes/iTunes Plug-ins/iLike.bundle) already -- to no avail.
tried to reinstall iTunes 7.0.0 (don't have 7.0.1 -- how can i get it?) but because the installer saw that 7.0.2 is already installed it didn't let me install 7.0.0. and i was afraid of trashing the whole 7.0.2 because i don't know if that will have any side effects on my >12000 tracks library...
any help MUCH appreciated!
thanks a bunch,
Stefan.

Answer 1

so...
funny. on my macbook pro the com.apple.itunes.plist file contains many keys and values.
on my powermac this file contains three:
ApplicationCrashedAfterRelaunch, lookForSharedMusic and pref:129:Preferences.
this last one is of Class "Data" and the Value is a long hex string.
So, no way to change the key "disablePodcasts" I found on my macbook pro.
however, I got an idea: why not just disconnect from internet so that iTunes cannot get any new podcast episodes.
did this via LittleSnitch: disallowed the application iTunes to connect to the internet at all.
however, to no avail.
I still get the progress bar and itunes still crashes before finishing whatever it does there.
anyone an idea why my com.apple.itunes.plist file is so different on my powermac than on my macbook pro? both is itunes 7.0.2...
cheers,
stefan.