Calib.err file missing exception

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Hi All,

I trying to run an optimization on a building. I am getting the error:

genopt.lang.OptimizerException: File: 'C:\~\Genopt\GenOpt\tmp-genopt-run-1\Calib.err' does not exist after simulation call.

I have the same problem running the example projects. Is there something that I may have missing resulting in this file not being generated?