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Random launch failures using iOS 11.2.1 and UE4.18.2

I have created a bare bones arkit app following the instructions in the release notes.

This worked fine and launched without any issues.

I stopped and restarted and now the app cannot be launched, nothing has changed. For some UE4 cannot find a file that was there a few minutes ago????

any ideas?

Here's part of the log.....

LogPlayLevel: ... Finished copying to '/Library/Caches/engine/content/internationalization/icudt53l/curr/supplementaldata.res' in 120.01 s LogPlayLevel: [DD] ... Copying '/Volumes/Data/work/ios/ar_demos/demo2/Saved/StagedBuilds/IOS/cookeddata/engine/content/internationalization/icudt53l/lang/en.res' -> '/Library/Caches/engine/content/internationalization/icudt53l/lang/en.res' ... LogPlayLevel: Directory (/Library/Caches/engine/content/internationalization/icudt53l/lang) doesn't exist! LogPlayLevel: CreateDirectory (/Library/Caches/engine/content/internationalization/icudt53l/lang) failed LogPlayLevel: Connect: Failed to Connect LogPlayLevel: [DD] ... Failed to transfer a file, extended error is 'AFCFileRefOpen (/Library/Caches/engine/content/internationalization/icudt53l/lang/en.res) failed with error 12' LogPlayLevel: [DD] LogPlayLevel: Exiting. LogPlayLevel: Took 366.271133s to run mono, ExitCode=1 LogPlayLevel: ERROR: Command failed (Result:1): /Users/Shared/Epic Games/UE_4.18/Engine/Binaries/DotNET/IOS/DeploymentServer.exe Deploy -manifest "/Volumes/Data/work/ios/ar_demos/demo2/Saved/StagedBuilds/IOS/Manifest_DeltaUFSFiles.txt9531cc8649bec0fc7bf19b005b1a62041de63549" -device 9531cc8649bec0fc7bf19b005b1a62041de63549 -additionalcommandline "-SessionId= 8ECBF142594F8970C2296EB8908B0658 -SessionOwner="lol" -SessionName="Launch On Device" " -bundle bytecrew.mobile.testing. See logfile for details: 'DeploymentServer-2017.12.29-16.38.45.txt' LogPlayLevel: (see /Users/lol/Library/Logs/Unreal Engine/LocalBuildLogs/UAT_Log.txt for full exception trace) LogPlayLevel: AutomationTool exiting with ExitCode=1 (Error_Unknown) LogPlayLevel: Completed Launch On Stage: Deploy Task, Time: 449.710019 LogPlayLevel: RunUAT ERROR: AutomationTool was unable to run successfully. PackagingResults: Error: Launch failed! Unknown Error

Product Version: UE 4.18
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asked Dec 29 '17 at 04:52 PM in Packaging & Deployment

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Bytecrew
23 1 2 6

avatar image Bytecrew Dec 29 '17 at 05:03 PM

Re ran the launch and this time it worked.

This is quite annoying!

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