UE5 Plugin (5.0) for resolving conflicting material GUIDs that cause errors in Swarm build and conflicting texture GUIDs that cause errors in texture streaming builds.

If you've seen the error

Assertion failed: StreamingTextures.Num() == StreamingTextureGuids.Num

or

Lighting build failed. Swarm failed to kick off

this may be the fix you were looking for.

After placing in Project>Plugins, restart the Editor and you should have three new buttons under "Tools" in the toolbar in a section called "GUID Fixer" Load the problematic level, click the button corresponding to your issue, and then Save All.

If you'd prefer, you can also download this plugin via GitHub.