[Wien] Mixer - Error, No feasible Pratt step

[Woohyeon Baek]

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[Laurence Marks]

I immediately tried and '*semicore band-ranges too large' **Error *
disappeared but it showed '*Mixer - Error, No feasible Pratt step'* Error.

This occurs when you try and run MSR1a and the RMTs are overlapping.

You should check that the first line in your case.inm has "MSR1" not
"MSR1a" when you are performing a static convergence. If you want to
optimize the internal positions then you will probably need to reduce the
RMT particularly of the C as they are touching, for instance with "setrmt
-r 4"