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[Unreal 4.17] Project crash when using optitrack plug-in

by Egon » Wed Apr 04, 2018 4:35 am

Hi, I'm trying to use Optitrack plug-in 1.7 with Unreal 4.17, but when I try to PIE a VR preview, the project crash. Even if it's a blank new project.

Here's the call stack :

Code: Select all
Assertion failed: Key.IsValid() [File:D:\Build\++UE4+Release4.17+Compile\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp] [Line: 6019]

UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release4.17+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349]
UE4Editor_Slate!FSlateApplication::OnControllerAnalog() [d:\build\++ue4+release4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:6023]
UE4Editor_OptitrackOculusInput
UE4Editor_Core!FWindowsApplication::PollGameDeviceState() [d:\build\++ue4+release4.17+compile\sync\engine\source\runtime\core\private\windows\windowsapplication.cpp:2233]
UE4Editor_Slate!FSlateApplication::PollGameDeviceState() [d:\build\++ue4+release4.17+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1501]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release4.17+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3206]
UE4Editor!GuardedMain() [d:\build\++ue4+release4.17+compile\sync\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release4.17+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build\++ue4+release4.17+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
kernel32
ntdll


It seems it's related to OptitrackOculusInput.

Does somebody already had this error ?
Egon
 
Posts: 2
Joined: Mon Mar 26, 2018 2:51 pm

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