Coils Files with only one current group crashes STELLOPT
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lazersos commented
STELLOPT will crash if you attempt to optimize a free boundary equilibrium with only one current group. This won't cause VMEC to crash but rather to issue the message:
% cdfgv: --E-- The variable curlabel is 1 dimensional
however, when STELLOPT attempts to read the wout
file and then write it again it crashes with
At line 463 of file wrout.f
Fortran runtime error: Index '1' of dimension 1 of array 'curlabel' outside of expected range (1:0)
The workaround is to always have more than one current group in your MGRID.