I'm having the same issue
curiousgeorge123
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Got the same error on a large mesh
2020-10-21 11:07:46.374517-0700	[19062:6094948] connection to com.apple.ModelIO.AssetLoader was interrupted
2020-10-21 11:07:46.377911-0700	[19062:6094927] AssetLoader.loadURL errorHandler: Error Domain=NSCocoaErrorDomain Code=4097 "connection to service on pid 0 named com.apple.ModelIO.AssetLoader" UserInfo={NSDebugDescription=connection to service on pid 0 named com.apple.ModelIO.AssetLoader}
2020-10-21 11:07:46.380719-0700	[19062:6094927] Couldn’t communicate with a helper application.
I can't even reply to a specific response in a thread, I can only reply to the main topic. These forums don't seem more like the feedback box at the Applebees restaurant - one way communication, and questionable whether corporate is reading it.
Did you find a solution to this? I'm having the same problem. usdzconverter only uses the last texture
Also not working for me. This is a significant blocker in our development environment
XCode 12 (12A7209)
Simulator
Version 12.0 (940.16)
SimulatorKit 597.13
CoreSimulator 732.17
Has there been any update on this issue? This post is almost 2 years old