[SOLVED] New STL file after restart

Hello all!

I am trying to add a brand new stl file for use as a granular wall in a restarted simulation with mesh/gran/stressanalysis etc.. When the simulation runs, the KE is as expected but the all the stress values in the vtk dump file are 'nan' even though the imported gran wall is nowhere near the very few particles in the system. What to do? I suppose I could start a new sim using old particle position data instead of restart, but I would much rather restart

I recall reading on this forum that we cannot insert new particles when a restart is current, is this a similar situation with STL files?

I also read in the docs that STL wall data is stored in binary restart files and can be brought back if the same fix id is used in a restart. I am using a different fix id for my new STL geometry.

Any help is greatly appreciated.
Zamir