Comment (by Vikram Manikantan):

I will set update_Tmunu=yes and see if that fixes it for me - at least we’ll be on the same page then. However, in the long term, this will make the simulation more expensive.

Shouldn’t Con2Prim work regardless of the update_Tmunu setting?

--
Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2497/illinoisgrmhd-is-incompatible-with-setting