Error termination during "open include file:" in LS-DYNA
When I try to run an FSI simulation in LS-DYNA, the simulation immediately gets terminated when it tries to open the "include files".
I tried to run the solid model separately and this works, so I suppose the problem lies with opening the fluid mesh.
This type of error does not appear for every simulation. Sometimes it disappears all of a sudden (at least, so it seems to me) and the model can be run successfully.
So my question: what exactly happens here, and how can I make sure this does not happen again?