My Conclusion:
On my fresh installed windows:
- disabled ‘Variant Manager’, ‘Variant Manager Content’ and ‘Sample Mesh Reconstructor’ and got it working, couldn’t find MDL/AxF Importer for some reason → error disappeared
On my laptop:
- the Sample Mesh Reconstructor was already disabled
- first disabled the variant manager and variant manager content, launced, but the error persisted
- next disabled MDL/AxF importer extra, the error disappeared
My final conclusion would be you need to disable them all as Bas proposed.