EXIT CODE: 193?

I get the following error when running my fortran MPI code.

===================================================================================
= BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES
= EXIT CODE: 193
= CLEANING UP REMAINING PROCESSES
= YOU CAN IGNORE THE BELOW CLEANUP MESSAGES
===================================================================================

What does it mean?

Thanks!

PS: I'm compiling ussing the -check all flag but that is the only error that I get.