Believable3D, let's postpone this discussion after the 3.1 update comes out. There might be issues in some of the materials that you have in the stored presets that cause the internal conversion to stop. I have found a couple of those issues and solved them in 3.1. I'm testing the final parts of it and I expect to release it in a few days. 

At this point it's better to see if the issue persists after the update instead of trying to fix something that is already fixed.

Thank you for your patience.

Paolo

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