geogrid and metgrid displaying error messages when run in parallel

[maxhbalsmeier]

I have an appplication that is very performance-critical and therefore I would like to run especially metgrid with MPI.

However, I get messages of the form ERROR: Error in ext_pkg_open_for_write_begin.

I am using WPS 4.6.0 and I run it with

mpirun -np 4 ./geogrid.exe.

I compiled with the MPI option.

Appended you find the namelist and the console output for geogrid.

Is this potentially a bug?
Thank you.