***ERROR: Unexpected end-of-file encountered when reading part map file (.prt).

Dear all I would like to know if someone had this issue as well in the past. I am doing a series of remeshing and suddenly at someopoint this error came out. The anaylsis should proceed smoothly but it wont due to this fata error. When i look inside the prt file I can see that it is only partially written, like it stopped at some point without a proper reason.

I woild appreciate a second opinion for you all.

Thank you in advance!