with complex scenes, my suggestion is to firstly export to Standalone, and if everything is ok, then export to ORC from Standalone.
In your particular case,mtry to freeze the xref of the object that is geaving issues, to help the exporter in f9nding all the necessary assests.
As always, remember to use an Imagetexturevnode for each bitmap in the scene, and avoid as hell to use c4d shaders.
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