I've tried converting a gltf to usdz but it only puts out a USDZ-conversion error. Under deatils it only says "An unexpected error occurred while converting this file to USDZ. Please fix any other errors and try again." This error just showed up recently. I'm on MacOS 12.3.1 and Reality Converter 1.0 (47.1)
Hi! Could you please provide us with a copy of your gltf file and a sysdiagnose via feedback assistant? Please post the feedback ID here and I can send it to the RC team directly.
Come on Apple. Your developer forums are less than helpful. It would be great if Apple could spare an expert staff member to answer some questions, such as this one on line to help the rest of us.