Can't open included file 'usrnlst.inc' when building solver

Hi everyone,
My MFIX 21.4 is installed on Win10 and my case for biomass gasification with usr_rates.f and usr_rates_des.f runs well if I choose to use the default solver mfixsolver.exe. However, when I try to build the solver for parallel, an error appears:

I am not sure how to solve it and my files for this case are attached here.
usr_rates_des.f (5.3 KB)
usr_rates.f (3.4 KB)
Biomass_12.mfx (19.0 KB)

usrnlst.inc is only used when you have defined additional keywords. I don’t think you have done so in this case. So just remove the line

INCLUDE  'usrnlst.inc'

which is in your usr_rates.f, twice, at line 32 and 82

– Charles

Thanks. Happy new year!