When running a BNS simulation, we occasionally run into the following error message:
ERROR from host node1 process 0
in thorn CarpetRegrid2, file /home/wbark/Software/EinsteinToolkit/Cactus/configs/sim/build/CarpetRegrid2/regrid.cc:80:
-> The radius of refinement level 7 of region 3 is [-1,-1,-1], which is not non-negative