Hello @papa335677 @RobertVater ! I just see your messages. I think this issue was fixed too in the last dev branch in version 0.4.2. Dev Branch Look about "Download and installation from dev Branch".

I followed the instructions for exporting LODs to unreal, but based on the console log in Unreal, the import of the LODs fails, only the base mesh gets imported and the number of LODs, but every LOD ...