Hello all,
There is a very recent bug in GRHydro that seems to be able to cause NaNs after regridding. It existed between revisions 359 (where it was introduced, this is after the release) and revison 370 (where it was hopefully removed again) of GRHydro. r370 is the most current version as of this email. Do you see this as well with the released version (which would be bad)?
This ought to be r372 not r370 since I reverted the wrong commit.
Yours, Roland