UE 5.2 and 5.3 Connector "Crash inside the platform compiler" upon project opening

Omniverse Connections & Data Exchange Omniverse Connectors
1

Issue: “Crash inside the platform compiler” upon project opening

I’ve recently encountered an issue with the Omniverse Connector for Unreal Engine and was hoping to get some insights or solutions from the community. After installing the connector version for Unreal Engine 5.3, I attempted to open my project but was met with a error message box says “Crash inside the platform compiler.” during Compiling shaders process. (Logs attached)

I’m stumped on what I might be doing wrong or if there’s a specific fix for this issue. Any advice or guidance would be greatly appreciated.

Thanks in advance!

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Attempted troubleshootings

  • Downgraded to Unreal Engine 5.2 and installed the corresponding version of the Omniverse Connector, yet the problem persisted. Interestingly, when I remove the connector, the project opens without any issues, indicating >that the connector might be the root cause of the problem.
  • Running the command where omniclient.dll in cmd returns “INFO: Could not find files for the given >pattern(s).”
  • I have tried restart the system, reinstall the plugins, none of which shows effects.

Stepts to reproduce

  1. Download and install Unreal Engine 5.2/5.3.
  2. Download and install the Omniverse Connector for UE 5.2/5.3.
  3. Attempt to create and open a project.
  4. Encounter the error message box.

Unreal Engine Project Informations

  • Project template: Game > Blank
  • Both project (one for UE5.3 and one for UE5.2) are newely created blank projects.

Software Informations

  • Unreal Engine: 5.2.1 && 5.3.2
  • Unreal Engine 5.2 Ominverse Connector: 203.0.193
  • Unreal Engine 5.3 Omniverse Connector: 203.0.189
  • Nvidia Driver: 551.23
  • nvcc: 12.3
  • CUDA Version: 12.4

Hardware informations

  • GPU: Nvidia RTX 4090
  • CPU: Intel i9-13900k

Attachments

Unreal Engine Logs: USDTest2.log (115.1 KB)

2

@ZekeZ just curious - if you were to uninstall the connector, are you able to open your projects?

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Hi, @Simplychenable thank you for replying.
Yes, I can open up the project after I uninstalled the Omniverse Connector plugin.

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based on my testing on UE 5.3.2, connector 203.0.189, and Win11, i cannot seem to repro the crash. it might be an isolated incident because your hardware seems to be top of the line consumer products; the only other thing we can speculate is the installation. you installed the plugin with admin rights, i presume? where did you get the crash log? i’d like to see if i can do a side-by-side on my end.

these are just me brainstorming, so hopefully the mods/devs can provide some insight.

5

So, I searched almost everything and everywhere about this error but couldn’t find anything.
But the solution is " DISABLE YOUR XMP " in bios. Only this worked for me