Unreal Engine Issues
Unreal Engine Issues
Compile failure adding BTTask_RunBehavior C++ class to project
UE - AI - Dec 22, 2016Error message in log is:CompilerResultsLog:Error: Error MyBTTask_RunBehavior.cpp.obj : error LNK2001: unresolved external symbol "public: virtual void __cdecl IGameplayTaskOwnerInterface::OnGameplay ...
Compute shader TAADilateVelocity crashes on macOS
UE - Platform - Apple - Oct 14, 2021Summary A licensee recently integrated the Oceanology 5 plugin from the marketplace and it triggered a crash on macOS/Metal.Platform The licensee is running macOS Bit Sur 11.5.2 on an AMD Radeon Pro ...
Take Recorder - Viewport Freezing and Performance Degradation When Recording Without Subsequences
UE - Virtual Production - Tools - Take Recorder - Apr 11, 2024Description: In Unreal Engine 5.4, when recording camera movements using the Take Recorder with the "Record Sources Into Sub Sequences" option turned off, significant viewport freezing and performan ...
Nanite Mesh Dither Opacity Mask Not Working in 5.6.0
UE - Graphics Features - Nanite - Jul 30, 2025In Unreal Engine 5.5.4, the Dither Opacity Mask option in a Masked material works correctly on Nanite meshes. However, in version 5.6.0, the dithering effect no longer applies to Nanite meshes. ...
Blueprints copied or moved to another level do not retain variable references to other Actors that are also copied or moved
UE - Gameplay - Blueprint - Apr 17, 2015Blueprints copied or moved to another level do not retain variable references to other Actors that are also copied or moved. Reproduced in 4.7.5 binary and Main (//depot/UE4/Promotable-CL-2507843) ...
Blueprint navmesh modifier does not update navmesh in level
UE - AI - Jun 21, 2015CrashReporter: [Link Removed] The Navmesh Modifier Component in blueprints does not properly update a levels navmesh. ...
Application is crashing on the HTC One when UMG is used in the project
UE - Platform - Mobile - Jan 26, 2015If you include UMG in your project and deploy to an HTC One, the project will crash on the device. Tested this on multiple devices (Galaxy S5, HTC One, NVIDIA Sheild tablet) Monitor logs are atta ...
Changing the value of a text struct variable inside a duplicated function that contains a Make Struct node will reset that value in the original function
UE - Gameplay - Blueprint - Mar 11, 2015Changing the value of a text struct variable inside a duplicated function that contains a Make Struct node will reset that value in the original function. This does not appear to occur with other va ...
sg.EffectsQuality does not seem to update once set in the devices profiles or .ini file
UE - Platform - Mobile - Nov 7, 2016Effects Quality settings within the device profiles, or even set in the .ini file seem to be ignored. Even when you're calling sg.effectsquality in the console command, it's ignored. The only way I ...
Calling a function that returns TWeakObjectPtr in blueprints causes crash
UE - Gameplay - Blueprint - Mar 20, 2015Calling a code defined function in blueprints that returns a TWeakObjectPtr causes a crash. ...