Level sequencer references missed after saving the level

Omniverse Connections & Data Exchange Omniverse Connectors
1

Good Day,

I am doing the following steps to import the USD into Unreal engine 5.1.1,

  1. Setup animation in Omniverse
  2. Save the USD
  3. In Unreal, Import USD —> All the assets get imported into unreal
  4. The Imported USD scene is opened in an unsaved level
  5. The Level sequencer is working perfectly in the unsaved level
  6. As soon as the level is saved, The level sequencer stops working with errors on each object “The object bound to this track is missing”

Please provide a fix or correct me if I missed out something in my Import process.

Also, The Material changes that I performed in Omniverse is also not reflected, I am getting the initial materials that were there in the Nvidia assets after importing.

Thank you,

2

You should save the level and the level sequence after Step 5. Note: save level at first, then level sequence.

3

How did you change the material? And what’s the render context you selected when importing assets?

4

I have found a fix by using the “Fix references” option in the sequencer, It found all the missing references and the animations are working properly.

5

Tried setting the Material option to MDL and Unreal, Both are not working.

Screenshots of Omniverse and Unreal setup - Omniverse Material Import issue - Album on Imgur

6

It looks like the materials failed to be imported. You may check logs for details.

7

You were right, There were some errors in the log,

LogMDLExpression: Error: [/Game/MDL/Functions/mdl_Materials_2023_2_1_Automotive_Imperfect_Templates_OmniUber_Automotive_initialize_uv_streams] is failed to load, please check and reinstall
LogMDLExpression: Error: [/Game/MDL/Functions/mdl_initialize_uv_streams] is failed to load, please check and reinstall
LogMDLExpression: Error: [/Game/MDL/Functions/mdl_Materials_2023_2_1_Automotive_Imperfect_Templates_OmniUber_Automotive_initialize_uv_streams] is failed to load, please check and reinstall
LogMDLExpression: Error: [/Game/MDL/Functions/mdl_initialize_uv_streams] is failed to load, please check and reinstall
LogMDLExpression: Error: [/Game/MDL/Functions/mdl_Materials_2023_2_1_Automotive_Pristine_Templates_OmniUber_Automotive_initialize_uv_streams] is failed to load, please check and reinstall
LogMDLExpression: Error: [/Game/MDL/Functions/mdl_initialize_uv_streams] is failed to load, please check and reinstall
LogMDLExpression: Error: [/Game/MDL/Functions/mdl_Materials_2023_2_1_Automotive_Imperfect_Templates_OmniUber_Automotive_initialize_uv_streams] is failed to load, please check and reinstall
LogMDLExpression: Error: [/Game/MDL/Functions/mdl_initialize_uv_streams] is failed to load, please check and reinstall
LogMDLExpression: Error: [/Game/MDL/Functions/mdl_Materials_2023_2_1_Automotive_Imperfect_Templates_OmniUber_Automotive_initialize_uv_streams] is failed to load, please check and reinstall
LogMDLExpression: Error: [/Game/MDL/Functions/mdl_initialize_uv_streams] is failed to load, please check and reinstall
LogMDLExpression: Error: [/Game/MDL/Functions/mdl_Materials_2023_2_1_Automotive_Pristine_Templates_OmniUber_Automotive_initialize_uv_streams] is failed to load, please check and reinstall
LogMDLExpression: Error: [/Game/MDL/Functions/mdl_initialize_uv_streams] is failed to load, please check and reinstall
LogPackageName: Error: FromPackageNameChecked: Invalid LongPackageName "/Game/Master/02_Art/USD_Imports/Warehouse/mat__issue/warehouse/Textures/"
8

We supported automotive mdl materials in 204.0

  • Support loading Omniverse Automotive and Environments materials [OM-102689]
    But UE5.1 isn’t on the supporting list
1 Like
9

Ah ok, Let me upgrade to 5.3 and try. Thanks for the information.

10

Hey, sorry for the long delay,
I updated to UE5.3 and The Issues were all gone.

Thanks

11

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