Good evening, morning, or whatever time of day anyone reading this post is currently in. I am a college student and for my final 2 projects for my game development course this semester, I have decided to begin prototyping a VR RPG. I don’t expect to create much more than a couple prototype demo areas and a rudimentary melee combat system, but went ahead and setup a project to run on my Oculus Quest 2. When trying to launch the game natively on the device using the Launch feature in UE4, the build crashes and the game won’t run in headset. I have set the target as the quest, made sure that android was a supported platform, and followed the instructions to set up oculus mobile development for UE4.26. Below is the code that was in the output log and I’ve googled for nearly 30 minutes with no luck thus far and I hope that someone here might have encountered a similar issue to mine and can help me fix it.
LogPlayLevel: Completed Launch On Stage: Cooking in the editor, Time: 0.000045
LogD3D11RHI: CreateSwapChainForHwnd failed with result ‘DXGI_ERROR_INVALID_CALL’ (0x887A0001), falling back to legacy CreateSwapChain.
LogPlayLevel: Running AutomationTool…
LogPlayLevel: Parsing command line: -ScriptsForProject=“E:/Unreal Projects/VR_RPG/VR_RPG.uproject” BuildCookRun -project=“E:/Unreal Projects/VR_RPG/VR_RPG.uproject” -noP4 -clientconfig=Development -serverconfig=Development -nocompile -nocompileeditor -installed -ue4exe=“E:\Unreal Engine\UE_4.26\Engine\Binaries\Win64\UE4Editor-Cmd.exe” -utf8output -platform=A
ndroid -targetplatform=Android -cookflavor=ASTC -ini:Game:[/Script/UnrealEd.ProjectPackagingSettings]:BlueprintNativizationMethod=Disabled -build -map=/Game/VREP/01 -skipcook -CookInEditor -iterativecooking -compressed -iterativedeploy -stage -deploy -cmdline="/Game/VREP/01 -Messaging" -device=Android_ASTC@1WMHH830S30503 -addcmdline="-SessionId=5FA8A3524D17B
68E87B89081AA135D07 -SessionOwner=‘dakot’ -SessionName=‘Launch On Device’ " -run
LogPlayLevel: Setting up ProjectParams for E:\Unreal Projects\VR_RPG\VR_RPG.uproject
LogPlayLevel: Error: ERROR: System.ArgumentException: An item with the same key has already been added.
LogPlayLevel: at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
LogPlayLevel: at System.Collections.Generic.Dictionary2.Insert(TKey key, TValue value, Boolean add) LogPlayLevel: at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable1 source, Func2 keySelector, Func2 elementSelector, IEqualityComparer1 comparer) LogPlayLevel: at AutomationTool.ProjectUtils.RequiresTempTarget(FileReference RawProjectPath, Boolean bProjectHasCode, UnrealTargetPlatform Platform, UnrealTargetConfiguration Configuration, TargetType TargetType, Boolean bRequiresAssetNativization, Boolean bRequiresCookedData, String& OutReason) in D:\Build\++UE4\Sync\Engine\Source\Programs\Automa tionTool\AutomationUtils\ProjectUtils.cs:line 208 LogPlayLevel: at AutomationTool.ProjectUtils.RequiresTempTarget(FileReference RawProjectPath, List1 Platforms, List1 Configurations, Boolean AssetNativizationRequested) in D:\Build\++UE4\Sync\Engine\Source\Programs\AutomationTool\AutomationUtils\ProjectUtils.cs:line 155 LogPlayLevel: at AutomationTool.ProjectUtils.DetectProjectProperties(FileReference RawProjectPath, List1 ClientTargetPlatforms, List1 ClientTargetConfigurations, Boolean AssetNativizationRequested) in D:\Build\++UE4\Sync\Engine\Source\Programs\AutomationTool\AutomationUtils\ProjectUtils.cs:line 533 LogPlayLevel: at AutomationTool.ProjectUtils.GetProjectProperties(FileReference RawProjectPath, List1 ClientTargetPlatforms, List1 ClientTargetConfigurations, Boolean AssetNativizationRequested) in D:\Build\++UE4\Sync\Engine\Source\Programs\AutomationTool\AutomationUtils\ProjectUtils.cs:line 99 LogPlayLevel: at AutomationTool.ProjectParams.AutodetectSettings(Boolean bReset) in D:\Build\++UE4\Sync\Engine\Source\Programs\AutomationTool\AutomationUtils\ProjectParams.cs:line 2046 LogPlayLevel: at AutomationTool.ProjectParams..ctor(FileReference RawProjectPath, BuildCommand Command, String Device, String MapToRun, String AdditionalServerMapParams, ParamList1 Port, String RunCommandline, String StageCommandline, String BundleName, String StageDirectoryParam, String UE4Exe, String SignPak, List1 ClientConfigsToBuild, List1
ServerConfigsToBuild, ParamList1 MapsToCook, ParamList1 MapIniSectionsToCook, ParamList1 DirectoriesToCook, String DDCGraph, String InternationalizationPreset, ParamList1 CulturesToCook, ParamList1 ClientCookedTargets, ParamList1 EditorTargets, ParamList1 ServerCookedTargets, List1 ClientTargetPlatforms, Dictionary2 ClientDependentPlatformMap, List
1 ServerTargetPlatforms, Dictionary2 ServerDependentPlatformMap, Nullable1 Build, Nullable1 SkipBuildClient, Nullable1 SkipBuildEditor, Nullable1 Cook, Nullable1 Run, Nullable1 SkipServer, Nullable1 Clean, Nullable1 Compressed, String AdditionalPakOptions, String AdditionalIoStoreOptions, Nullable1 IterativeCooking, String IterateSharedCookedBuild,
Nullable1 IterateSharedBuildUsePrecompiledExe, Nullable1 CookAll, Nullable1 CookPartialGC, Nullable1 CookInEditor, String CookOutputDir, Nullable1 CookMapsOnly, Nullable1 CookOnTheFly, Nullable1 CookOnTheFlyStreaming, Nullable1 UnversionedCookedContent, Nullable1 EncryptIniFiles, Nullable1 EncryptPakIndex, Nullable1 EncryptEverything, Nullable1
SkipCookingEditorContent, Nullable1 NumCookersToSpawn, String AdditionalCookerOptions, String BasedOnReleaseVersion, String CreateReleaseVersion, String CreateReleaseVersionBasePath, String BasedOnReleaseVersionBasePath, Nullable1 GeneratePatch, Nullable1 AddPatchLevel, Nullable1 StageBaseReleasePaks, Nullable1 GenerateRemaster, String DiscVersion, Stri ng DLCName, String DiffCookedContentPath, Nullable1 DLCIncludeEngineContent, Nullable1 DLCPakPluginFile, Nullable1 DLCActLikePatch, Nullable1 CrashReporter, Nullable1 DedicatedServer, Nullable1 Client, Nullable1 Deploy, String DeployFolder, String GetFile, Nullable1 FileServer, Nullable1 Foreign, Nullable1 ForeignCode, Nullable1 LogWindow, Nullabl
e1 NoCleanStage, Nullable1 NoClient, Nullable1 NoDebugInfo, Nullable1 SeparateDebugInfo, Nullable1 MapFile, Nullable1 NoXGE, Nullable1 SkipPackage, Nullable1 Package, Nullable1 Pak, Nullable1 IgnorePaksFromDifferentCookSource, Nullable1 IoStore, Nullable1 SkipIoStore, Nullable1 Prereqs, String AppLocalDirectory, Nullable1 NoBootstrapExe, Nullab
le1 SignedPak, Nullable1 PakAlignForMemoryMapping, Nullable1 NullRHI, Nullable1 FakeClient, Nullable1 EditorTest, Nullable1 RunAutomationTests, String RunAutomationTest, Nullable1 CrashIndex, Nullable1 SkipCook, Nullable1 SkipCookOnTheFly, Nullable1 SkipPak, Nullable1 PrePak, Nullable1 SkipStage, Nullable1 Stage, Nullable1 Manifests, Nullable1 CreateChunkInstall, Nullable1 Unattended, Nullable1 NumClients, Nullable1 Archive, String ArchiveDirectoryParam, Nullable1 ArchiveMetaData, Nullable1 CreateAppBundle, String SpecifiedClientTarget, String SpecifiedServerTarget, ParamList1 ProgramTargets, Nullable1 Distribution, Nullable1 Prebuilt, Nullable1 RunTimeoutSeconds, String SpecifiedArchite
cture, String UbtArgs, String AdditionalPackageOptions, Nullable1 IterativeDeploy, Nullable1 FastCook, Nullable1 IgnoreCookErrors, Nullable1 RunAssetNativization, Nullable1 CodeSign, Nullable1 TreatNonShippingBinariesAsDebugFiles, Nullable1 UseExtraFlavor, String Provision, String Certificate, String Team, Boolean AutomaticSigning, ParamList1 InMapsT
oRebuildLightMaps, ParamList1 InMapsToRebuildHLOD, ParamList1 TitleID) in D:\Build++UE4\Sync\Engine\Source\Programs\AutomationTool\AutomationUtils\ProjectParams.cs:line 1084
LogPlayLevel: at BuildCookRun.SetupParams() in D:\Build++UE4\Sync\Engine\Source\Programs\AutomationTool\Scripts\BuildCookRun.Automation.cs:line 46
LogPlayLevel: at BuildCookRun.ExecuteBuild() in D:\Build++UE4\Sync\Engine\Source\Programs\AutomationTool\Scripts\BuildCookRun.Automation.cs:line 37
LogPlayLevel: at AutomationTool.BuildCommand.Execute() in D:\Build++UE4\Sync\Engine\Source\Programs\AutomationTool\AutomationUtils\BuildCommand.cs:line 263
LogPlayLevel: at AutomationTool.Automation.Execute(List1 CommandsToExecute, Dictionary2 Commands) in D:\Build++UE4\Sync\Engine\Source\Programs\AutomationTool\AutomationUtils\Automation.cs:line 547
LogPlayLevel: at AutomationTool.Automation.Process(String[] Arguments, StartupTraceListener StartupListener) in D:\Build++UE4\Sync\Engine\Source\Programs\AutomationTool\AutomationUtils\Automation.cs:line 511
LogPlayLevel: at AutomationTool.Program.MainProc(String[] Arguments, StartupTraceListener StartupListener) in D:\Build++UE4\Sync\Engine\Source\Programs\AutomationTool\Program.cs:line 175
LogPlayLevel: at AutomationTool.Program.<>c__DisplayClass1_0.b__2() in D:\Build++UE4\Sync\Engine\Source\Programs\AutomationTool\Program.cs:line 87
LogPlayLevel: at AutomationTool.InternalUtils.RunSingleInstance(Func`1 Main) in D:\Build++UE4\Sync\Engine\Source\Programs\AutomationTool\AutomationUtils\Utils.cs:line 737
LogPlayLevel: at AutomationTool.Program.Main(String[] Arguments) in D:\Build++UE4\Sync\Engine\Source\Programs\AutomationTool\Program.cs:line 87
LogPlayLevel: (see C:\Users\dakot\AppData\Roaming\Unreal Engine\AutomationTool\Logs\E+Unreal+Engine+UE_4.26\Log.txt for full exception trace)
LogPlayLevel: AutomationTool exiting with ExitCode=1 (Error_Unknown)
LogPlayLevel: Completed Launch On Stage: Build Task, Time: 0.754463
LogPlayLevel: BUILD FAILED
PackagingResults: Error: Launch failed! Unknown Error
LogD3D11RHI: CreateSwapChainForHwnd failed with result ‘DXGI_ERROR_INVALID_CALL’ (0x887A0001), falling back to legacy CreateSwapChain.
LogD3D11RHI: CreateSwapChainForHwnd failed with result ‘DXGI_ERROR_INVALID_CALL’ (0x887A0001), falling back to legacy CreateSwapChain.