Unable to start launcher on OS X

Development Getting Started & Setup
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1

Hi,

Since the last few launcher updates I have been unable to run the launcher on OS X. It just appears in the dock and then hangs. Running from the command line gives me the following:

11:02:57 alex@alex-pc:/Applications/Unreal Engine.app $ /Applications/Unreal\ Engine.app/Contents/MacOS/UnrealEngineLauncher-Mac-Shipping
2014-10-05 11:03:00.139 UnrealEngineLauncher-Mac-Shipping[995:6d03] An uncaught exception was raised
2014-10-05 11:03:00.139 UnrealEngineLauncher-Mac-Shipping[995:6d03] launch path not accessible
2014-10-05 11:03:00.139 UnrealEngineLauncher-Mac-Shipping[995:6d03] (
	0   CoreFoundation                      0x00007fff9435325c __exceptionPreprocess + 172
	1   libobjc.A.dylib                     0x00007fff94053e75 objc_exception_throw + 43
	2   CoreFoundation                      0x00007fff9435310c +[NSException raise:format:] + 204
	3   Foundation                          0x00007fff92458517 -[NSConcreteTask launchWithDictionary:] + 450
	4   UnrealEngineLauncher-Mac-Shipping   0x00000001066feb15 _ZN19FMacPlatformProcess10CreateProcEPKwS1_bbbPjiS1_Pv + 5653
	5   UnrealEngineLauncher-Mac-Shipping   0x000000010662a1f6 -[UE4AppDelegate runGameThread:] + 1190
	6   UnrealEngineLauncher-Mac-Shipping   0x00000001066c2dc6 -[FCocoaGameThread main] + 70
	7   Foundation                          0x00007fff9232f76b __NSThread__main__ + 1318
	8   libsystem_pthread.dylib             0x00007fff8c4f0899 _pthread_body + 138
	9   libsystem_pthread.dylib             0x00007fff8c4f072a _pthread_struct_init + 0
	10  libsystem_pthread.dylib             0x00007fff8c4f4fc9 thread_start + 13
)
2014-10-05 11:03:00.140 UnrealEngineLauncher-Mac-Shipping[995:6d03] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'launch path not accessible'
*** First throw call stack:
(
	0   CoreFoundation                      0x00007fff9435325c __exceptionPreprocess + 172
	1   libobjc.A.dylib                     0x00007fff94053e75 objc_exception_throw + 43
	2   CoreFoundation                      0x00007fff9435310c +[NSException raise:format:] + 204
	3   Foundation                          0x00007fff92458517 -[NSConcreteTask launchWithDictionary:] + 450
	4   UnrealEngineLauncher-Mac-Shipping   0x00000001066feb15 _ZN19FMacPlatformProcess10CreateProcEPKwS1_bbbPjiS1_Pv + 5653
	5   UnrealEngineLauncher-Mac-Shipping   0x000000010662a1f6 -[UE4AppDelegate runGameThread:] + 1190
	6   UnrealEngineLauncher-Mac-Shipping   0x00000001066c2dc6 -[FCocoaGameThread main] + 70
	7   Foundation                          0x00007fff9232f76b __NSThread__main__ + 1318
	8   libsystem_pthread.dylib             0x00007fff8c4f0899 _pthread_body + 138
	9   libsystem_pthread.dylib             0x00007fff8c4f072a _pthread_struct_init + 0
	10  libsystem_pthread.dylib             0x00007fff8c4f4fc9 thread_start + 13
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Fatal error: [File:/Users/build/BuildFarm/build_++depot+UE4-LauncherReleases/Engine/Source/Runtime/Core/Private/Misc/CoreMisc.cpp] [Line: 556]
Attempting to get the command line but it hasn't been initialized yet.

I have tried completely removing the following directories:

  • /Users/Shared/UnrealEngine
  • ~/Library/Application Support/Epic
  • ~/Library/Preferences/Unreal Engine

and removed and redownloaded the launcher from scratch, and the problem still occurs.

I’m running OS X 10.9.4.

2

Hi aejsmith,

Please try the troubleshooting steps linked below. Afterwards if the issue is still present, follow the steps at the bottom of the page to find your ‘Verbose Logs’ and post them here. They will help us track down the issue. At the bottom of the ‘Verbose Logs’ section, there are additional instructions for Mac.

Thanks,
TJ

3

Hi,

The launcher wasn’t even creating any log files. However, I’ve managed to fix it - there seems to have been some problem with UE4EditorServices, after removing ~/Library/Services/UE4EditorServices.app the launcher is working again.

Thanks,
Alex