Check for FMU License instead of unreal crash: Unhandled exception: 0xe06d7363

[lewinj]

When play is pressed the Unreal editor crashes leaving the error message "unhandled exception: 0xe06d7363" This occurs when the A_fmi object containing a simple pendulum FMU is in the level. The FMU used is below
simplependulum.zip

[greenwoodms06]

What was that FMU created with?

• Compiler?
• Dymola Export license?

[greenwoodms06]

If you have the modelica source code and can share that it'd likely be much easier to pinpoint the issue.

[greenwoodms06]

So a quick check of the fmu using the FMPy GUI gave an error. This could very well be the problem.

[lewinj]

Sorry about the late reply, I'm using Dymola 2021x version 4.0.0 and Microsoft visual studio 2019 version 16.8.4 is the compiler. As for the license, I use my school's license server. Would including the license file in the project folder help?

[greenwoodms06]

No no no. Don't share license info. With Dymola there is a "binary export license" that is required to create FMUs that do not require a license to run. One issue already is that Unreal likely has no idea how to access that. So before going down that rabbit hole you either need to make sure to export your FMU with that license turned on or share the source code so I can compile the FMU myself as I have the binary license.

[lewinj]

I used the Binary export license when making the new FMU, that fixed the issue. Thank you so much! I'm new both to Modelica and Unreal so the help is greatly appreciated.

[greenwoodms06]

So the FMU now works in Unreal and this issue should be closed? Or just the license issue is fixed and we still have the Unreal issue?

[lewinj]

the unreal issue was fixed

[greenwoodms06]

alright. great. Since the issue is pressing I won't dive into it now but I'll update the title of this issue to reflect that having a check for a license a capability we need to look at.