Comment (by Zach Etienne):

Issue 9: Running par/FLRW_powerspectrum.par results in a FORTRAN runtime error, as /path/to/flrwsolver/powerspectra/FLRW_matterpower_synchronous_z1000.dat does not exist. It would be better to check for the file’s existence in the Einstein Toolkit CCTK_*ERROR infrastructure, and would be a great opportunity to tell the user how to generate this file.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2549/inlcude-flrwsolver-in-et