# Unable to start launcher on OS X **URL:** \ **Category:** Getting Started & Setup\ **Tags:** os-x, launcher, unreal-engine, question\ **Created:** [October 5, 2014, 10:20am UTC](https://forums.unrealengine.com/t/unable-to-start-launcher-on-os-x/295325 "2014-10-05T10:20:33Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![aejsmith\_1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@aejsmith\_1](https://forums.unrealengine.com/u/aejsmith_1)\ **Post date:** [October 5, 2014, 10:20am UTC](https://forums.unrealengine.com/t/unable-to-start-launcher-on-os-x/295325/1 "2014-10-05T10:20:33Z")
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. ---
**Author:** ![TJ\_V](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/tj_v/32/1008648_2.png) [@TJ\_V](https://forums.unrealengine.com/u/TJ_V)\ **Post date:** [October 6, 2014, 1:59pm UTC](https://forums.unrealengine.com/t/unable-to-start-launcher-on-os-x/295325/2 "2014-10-06T13:59:57Z")
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. > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — https://unrealcommunity.wiki/! You will be able to find content from... Thanks, TJ ---
**Author:** ![aejsmith\_1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@aejsmith\_1](https://forums.unrealengine.com/u/aejsmith_1)\ **Post date:** [October 8, 2014, 3:53pm UTC](https://forums.unrealengine.com/t/unable-to-start-launcher-on-os-x/295325/3 "2014-10-08T15:53:09Z")
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