Hey Michael,

thanks for your feedback.

Yeah, "Calculation failed" would be absolutely fine with me if you want to keep it generic, as long as it stays on screen indefinitely in case I'm working in another software in parallel.

As far as the button - I was maybe unclear:
I personally would like the button to be only "pressable" if the last calculation was successful. Otherwise I'd prefer it to be greyed out, so the only option is "cancel".
I never meant it to change labels at all.
What I point at is the problem that in case of a failed operation it isn't clear what "Done" will do, therefore I think it shouldn't be available to be pressed in that case.

The thought about "Done" vs. "Apply" was separate from the above: I personally find "Done" not as clear as "Apply". Done is somehow generic and unspecific.
I often thought that when using MoI and just wanted to mention it.
I understand your point, but think that "Apply" would make it much clearer what to expect.
To me, "Done" feels too close to "Cancel".

Finally: I personally would prefer if the 3D-Views would show the original, unaltered model after a failed operation, not the last successful result, which is pretty irritating IMO.

Thanks and Cheers!

Tom