@lalalandsynth OH MY GOD.
I can't thank you enough. Didn't expect you to do this!
Thank you! This helps A LOT!

@lalalandsynth Dude, this is insane. Fantastic work!
If you don't mind me asking, can you point me to a tutorial that would cover knobs and faders animations rendering? Or something that would use the same concept.
Modelling and animating with keyframes in blender wouldn't be a problem. But I probably would need to setup some more details to get it ready to be used in HISE (I need to make a PNG stripe if I'm not wrong).
I'm probably googling it wrong, but can't find helpful material so far. Any help would be much appreciated!

@d-healey Solved. I was compiling using VS 2019.
Looking at my print the "Compiler Settings" only shows VS 15 and 17 available.
Installed 2017 and now I can export my instrument.
I'm sorry for that. I knew from the beginning that it probably was something very dumb that was causing the error... Anyway, thank you for your help!

Damn, so easy. Thanks again David!