Xcode won't start after OS update

Question

I just updated my macOS to 10.13.3 supplemental with the Telugu fix. Now I can not start Xcode 9.2 anymore.

Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Termination Reason:    DYLD, [0x1] Library missing

Application Specific Information:
dyld: launch, loading dependent libraries

Dyld Error Message:
  Library not loaded: @rpath/libswiftDispatch.dylib
  Referenced from: /Applications/Xcode.app/Contents/MacOS/Xcode
  Reason: image not found

Any suggestion on how to fix this?

Same crash with a fresh installed XCode 9.3 beta 3. – Rool Paap Feb 21 '18 at 21:23 — Rool Paap, Feb 21 '18 at 21:23

score 1 · Answer 1 · answered Feb 21 '18 at 22:57

1

Turns out that AVG anti virus placed the libswiftDispatch.dylib in quarantine as a false positive. Multiple programs on my Mac failed to start due to this reason.

I removed the AVG app and reinstalled XCode to get everything working again.

answered Feb 21 '18 at 22:57

Rool Paap

1,918
4
32
39

score 1 · Accepted Answer · answered Feb 28 '18 at 14:49

1

Confirming that Avast Business Antivirus broke my Xcode. To fix it, I made sure OSX was updated, then I opened Avast, opened Virus Chest, and restored libswiftDispatch.dylib then restarted my machine.

answered Feb 28 '18 at 14:49

iamnotsam

9,470
7
33
30

1

my virus scanner was broken after the update, so could not restore the files from the quarantine. – Rool Paap Feb 28 '18 at 20:20

Xcode won't start after OS update

2 Answers2