Xcode Crashing When Opening Project File

Question

Xcode keeps crashing on me when I open my project file. I've been able to open it fine for weeks now. Not sure how to diagnose. It only crashes for a specific project.

Process:         Xcode [1293]
Path:            /Developer/Applications/Xcode.app/Contents/MacOS/Xcode
Identifier:      com.apple.Xcode
Version:         3.2.5 (1760)
Build Info:      DevToolsIDE-17600000~5
Code Type:       X86-64 (Native)
Parent Process:  launchd [189]

Date/Time:       2010-12-15 16:05:24.659 -0700
OS Version:      Mac OS X 10.6.5 (10H574)
Report Version:  6

Interval Since Last Report:          201 sec
Crashes Since Last Report:           4
Per-App Interval Since Last Report:  80 sec
Per-App Crashes Since Last Report:   4
Anonymous UUID:                      2B7F7CFC-45EA-450C-8467-6BF1E356B6F6

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000025940
Crashed Thread:  10  Dispatch queue: com.apple.Xcode.index-access

Application Specific Information:
objc[1293]: garbage collection is ON

Answer 1

What worked for me?

The only solution that worked for me was deleting the derived data folders of the hanging project, i.e the derived data folders in above directory: ~/Library/Developer/Xcode/DerivedData/. Hope it helps someone.

What didn't?

As mentioned at other places, deleting MyProject.xcodeproj/project.xcworkspace/xcuserdata/ or MyProject.xcodeproj/xcuserdata/ didn't work for me.

Answer 2

I experienced XCode crashing when trying to edit a specific original.m file. None of the above solutions worked, but this did:

1. Create a new .m file as new.m for example.
2. Using a text editor open up original.m outside XCode, copy contents and paste into new.m inside XCode. Go back to working in XCode.
3. Delete and move to trash the original.m
4. Rename new.m to original.m
5. Now I can edit original.m without XCode crashing.

Answer 3

Computer restart

worked for me. While

xcuserdata deletion

and

defaults delete com.apple.dt.Xcode

didn't work for me.

I even was not able to open xcode alone or any of my projects or single .m file.

Answer 4

Copying Answer of @Sean D which worked for me.

After seeing a suggestion here, I solved this issue by deleting Xcode's preferences. The most reliable way to do that is the following terminal command, issued after quitting Xcode:

defaults delete com.apple.dt.Xcode

ETA: Other suggestions have involved changing or removing certain individual preference settings, but after trying a few of those, none worked for me. There seem to be multiple incompatibilities in the preferences between 6 and 7b3, so trashing the prefs entirely should work around them all.

Answer 5

In my case there were two windows, one on the internal screen of my MacBook and one on an external each with several tabs opened before Xcode crashed and kept crashing on trying to open the xcworkspace file. The above mentioned solutions did not work. After disconnecting the external display, Xcode started without crashing and both windows were placed on the MacBook's screen. Reattached the display and everything worked as before.

Answer 6

I had XCode crashing every time I opened Images.xcassets. The solution was to delete a corrupt PDF file I had just added.