Left is before conversion, right is after…
And when in Omniverse, all materials including that window are just grey and I tonnes of errors like this:
2023-09-26 13:31:19 [Warning] [omni.usd] Warning (secondary thread): in _ReportErrors at line 2890 of W:\ac88d7d902b57417\USD\pxr\usd\usd\stage.cpp -- In </World/Ferry_2023_Standalone/_Main_Assy/____Ship_Common_Systems/____Ship_Common_Systems_2/_9___ELECTRIC_CONSUMER_SYSTEMS/_93_ELECTRIC_LIGHTING_SYSTEMS/_93_001_GENERAL_LIGHTNING/LED_STRIP_EXTRUSION_27/LED_STRIP_EXTRUSION_body1_27/LED_STRIP_EXTRUSION_body1_001.material:binding>: The relationship target </Materials/color_9ca8abff_004> from </root/HSCF_N02_Main_Assy/____Ship_Common_Systems/____Ship_Common_Systems_2/_9___ELECTRIC_CONSUMER_SYSTEMS/_93_ELECTRIC_LIGHTING_SYSTEMS/_93_001_GENERAL_LIGHTNING/LED_STRIP_EXTRUSION_27/LED_STRIP_EXTRUSION_body1_27/LED_STRIP_EXTRUSION_body1_001.material:binding> in layer @C:/Users/Robert/Documents/Omniverse Projects/Ferry 2023/Ferry 2023 Standalone.usd@ refers to a path outside the scope of the payload from </World/Ferry_2023_Standalone>. Ignoring. (getting targets for relationship </World/Ferry_2023_Standalone/_Main_Assy/____Ship_Common_Systems/____Ship_Common_Systems_2/_9___ELECTRIC_CONSUMER_SYSTEMS/_93_ELECTRIC_LIGHTING_SYSTEMS/_93_001_GENERAL_LIGHTNING/LED_STRIP_EXTRUSION_27/LED_STRIP_EXTRUSION_body1_27/LED_STRIP_EXTRUSION_body1_001.material:binding> on stage @anon:00000285E6988360:World1.usd@ <00000284EFD91B20>)
2023-09-26 13:34:10 [Warning] [omni.usd] Warning: in _ReportErrors at line 2890 of W:\ac88d7d902b57417\USD\pxr\usd\usd\stage.cpp -- In </World/Ferry_2023_Standalone/_Main_Assy/____Equipment_for_Crew_and_Passengers/____Equipment_for_Crew_and_Passengers_2/_1___INSULATION__PANELS__BULKHEADS__DOORS__SIDESCUTTLES__SKYLIG/_15___SIDE_SCUTTLES___WINDOWS_W_EQUIPMENT/_15_005___Windows__Complete/Window_Main_MODEL/Window_4/brep_1_2_001/brep_1_2_002.material:binding>: The relationship target </Materials/Architectural_Glass> from </root/HSCF_N02_Main_Assy/____Equipment_for_Crew_and_Passengers/____Equipment_for_Crew_and_Passengers_2/_1___INSULATION__PANELS__BULKHEADS__DOORS__SIDESCUTTLES__SKYLIG/_15___SIDE_SCUTTLES___WINDOWS_W_EQUIPMENT/_15_005___Windows__Complete/Window_Main_MODEL/Window_4/brep_1_2_001/brep_1_2_002.material:binding> in layer @C:/Users/Robert/Documents/Omniverse Projects/Ferry 2023/Ferry 2023 Standalone.usd@ refers to a path outside the scope of the payload from </World/Ferry_2023_Standalone>. Ignoring. (getting targets for relationship </World/Ferry_2023_Standalone/_Main_Assy/____Equipment_for_Crew_and_Passengers/____Equipment_for_Crew_and_Passengers_2/_1___INSULATION__PANELS__BULKHEADS__DOORS__SIDESCUTTLES__SKYLIG/_15___SIDE_SCUTTLES___WINDOWS_W_EQUIPMENT/_15_005___Windows__Complete/Window_Main_MODEL/Window_4/brep_1_2_001/brep_1_2_002.material:binding> on stage @anon:00000285E6988360:World1.usd@ <00000284EFD91B20>)
EDIT: Wait, those errors only pop up if I drag the result of the Export USD button into Omniverse… if I open the file itself, everything looks ok including the world shader from Blender! (And if I can nitpick, the Materials are in a separate folder outside of Root, but “lights” is a folder inside of root and the capitalization is different…)