Xcode always crashing on launch

I updated Xcode, and now it always crashes when I try to start it, even
when I try from a newly created user account. The top of the crash log
looks like this:

Thread 0 Crashed:
0 <<00000000>> 0xfffeff30 objc_msgSend_rtp + 48
1 com.apple.Xcode.DevToolsCore 0x95350b00 -[XCSpecificationProxy loadedSpecification] + 1180
2 com.apple.Xcode.DevToolsCore 0x95350648 +[XCSpecification specificationForIdentifier:] + 836
3 com.apple.Xcode.DevToolsCore 0x95354294 -[PBXBuildRule initWithPropertyListDictionary:] + 1212
4 com.apple.Xcode.DevToolsCore 0x95353c94 +[PBXBuildRule _loadBuildRulesAtPath:] + 620
5 com.apple.Xcode.DevToolsCore 0x95356058 +[PBXBuildRule loadBuildRulesFromPropertyListsInDirectory:] + 656
6 com.apple.Xcode.DevToolsCore 0x95353998 +[PBXBuildRule _loadSystemBuildRulesIfNeeded] + 540
7 com.apple.Xcode.DevToolsCore 0x95353760 +[PBXBuildRule systemBuildRules] + 32
8 com.apple.Xcode.DevToolsCore 0x9534c5c8 XCInitializeCoreIfNeeded + 2500
9 com.apple.Xcode 0x000037f8 0x1000 + 10232
10 com.apple.Foundation 0x92975ad8 _nsnote_callback + 180
11 com.apple.CoreFoundation 0x9080b010 __CFXNotificationPost + 368
12 com.apple.CoreFoundation 0x908030ec _CFXNotificationPostNotification + 684
13 com.apple.Foundation 0x9295fee0 -[NSNotificationCenter postNotificationName:object:userInfo:] + 92

Re-installs with the same installer don't help.

I know there is a tool to tell you the name of any files a program
opens, but I can't remember what it is. Any suggestions?

(Next for me is to download a fresh copy of Xcode 2.2 from Apple.)

In article ,
Ben Artin wrote:

> In article ,
> David Phillip Oster wrote:
>
> > I updated Xcode, and now it always crashes when I try to start it, even
> > when I try from a newly created user account. The top of the crash log
> > looks like this:
> >
> [snip]
> >
> > Re-installs with the same installer don't help.
>
> I would start by removing dev tools and reinstalling, because my WAG is that
> one
> of the Xcode support files is damaged.
>
> You can remove dev tools using /Developer/Tools/uninstall-devtools.pl.
>
> Ben

You and Mike Pinkerton made this suggestion. You are right. It fixed the
problem.


Thank you!