Unreal Engine Issues

Packaged ThirdPerson template with "start in vr" enabled packaged and launched with "-nohmd" crashes

The callstack is not XR-specific, it's just the engine trying to secure the audio device on startup, windows failing to return one, and the app not being able to continue safely. The crash does not ...

Crash compiling a blueprint after changing a TMap value from Vector to Vector4

REGRESSION: Issue does not occur in 4.24 Crash occurs when the user changes a blueprint TMap value from Vector to Vector4 and then compiles the blueprint. This seems to only occur with TMaps, as ...

Setting a Niagara Bool parameter during runtime causes ensure and the parameter to not be read properly

Setting a Niagara Bool parameter during runtime causes ensure ...

Crash when adding a streaming level to the world through Python

When using the Python plugin to add an existing level as a streaming level, the editor crashes. It seems that this happens regardless of what level is added or what the contents of that level are. A ...

Material Editor Crash occurs on mathematical operation node receiving invalid input from a Texture Object

Crash when adding a Material Layer with a Static Component Mask Parameter node to a Material Instance

When adding a Material Layer, that has a Static Component Mask Parameter node in it, to a Material Instance, the editor will crash.   The ability to set Material Attribute layers in a Material Inst ...

Editor crash when deleting a outline folder with subfolders and using context menu

A user has reported that when using the Scene Outliner in a large map that has many actors and nested folders in the Outliner, deleting a folder that has subfolders from the Scene Outliner with Dele ...

Crash when compiling Blueprint class based off C++ actor with a Niagara component that has a user color curve

When creating a blueprint class based on a C++ actor with a Niagara component, color curves will cause the editor to crash when compiling the blueprint. This will impact users creating their own cla ...

Packaging with Code Editor plugin crashes and then fails to build

Packaging with the [experimental] Code Editor plugin enabled causes a crash during the packaging process in 4.8 source. The crash does not kill the editor, project can recover by choosing for Window ...

Converting a landscape to blueprint crashes editor

Converting a landscape to a blueprint immediately crashes the editor. Frequency: 2/2 ...