Unreal Engine Issues
Unreal Engine Issues
[CrashReport] Fatal error: Cast of nullptr to Actor failed - UE4Editor_CoreUObject!CastLogError()
Tools - Jul 19, 2017This is a common crash affecting users in 4.16, and has been occurring since at least 4.14. It has affected more than 400 unique users, unfortunately they have provided little information. User Des ...
[CrashReport] UE4Editor_PropertyEditor!FDetailCategoryImpl::GenerateNodeWidget()
Tools - Aug 3, 2017This is a trending crash in the 4.17 previews. Unfortunately users have not provided any descriptions of their actions when the crash occurred. Source Context 557 TSharedRef<ITableRow> FDe ...
Crash when Matinee with 2 Event Tracks stopped from one of the Event Tracks
Tools - Mar 16, 2015When stopping a Matinee from an Event Track via the level blueprint, if you have 2 Event Tracks the editor will crash. Also Reproduced in Main Promotable-CL-2479729 ...
Importing Camera FBX into a sequence can crash with a headless editor
UE - Anim - Sequencer - Mar 19, 2021In a headless editor instance we will not be able to send toasts to the user, and we should not notify slate. The Sequencer Tools function library calls MovieSceneToolHelpers::ImportFBXCameraToExist ...
HLOD build fails depending on the value of Loading Range in the World Settings
UE - World Creation - Worldbuilding Tools - HLOD - Jun 14, 2022HLOD actors are generated on the outliner, but no geometry is generated. An error occurs in the output log. ...
UMG widget appear darker on Mobile preview and device than in PIE
UE - Platform - Mobile - Nov 24, 2015When using mobile preview or when viewing on the device the colors for widgets appear darker. May be related to [Link Removed], however this was marked as fixed and I tested the project that was g ...
Material Parameter Collection does not correctly render in Widget BP
UE - Editor - UI Systems - Feb 23, 2015If a Material Parameter Collection with a Scalar Parameter is used within a material and that material is called within a widget the scalar parameter will render with a 0 value, even when set to ano ...
Complex Collision as Simple causes odd Overlap behavior
UE - Simulation - Physics - Jan 25, 2016When triggering overlap events with a Static Mesh using Complex Collision as Simple, the overlap Begin and End events will be triggered rapidly in sequence. Changing to Default collision will fix t ...
Widgets can no longer take focus after clicking somewhere other than the widget itself
UE - Editor - UI Systems - Oct 24, 2016Widgets can no longer take focus after clicking somewhere other than the widget itself. The input mode appears to change, but does not change back when clicking widgets Note: This issue did not app ...
Assigning a new Collision Channel to an already fractured Destructible will cause a crash
UE - Simulation - Physics - Destruction - Sep 6, 2016The editor will crash when assigning a new collision channel to an already fractured destructible mesh. Tested in: 4.13 CL-3106830 4.14 Dev-Main CL-3109838 ...