Description
Details on how to reproduce the issue. If MFiX crashed or failed, how long does it take? I built the DMP solver in GUI. Built was successful. But when a simulation is lauched, the solver crashes immediately, but proceeds with calculations

Attempts to fix the issue
Rebuilding the solver

Did you?

Select the relevant category (Installation / How to / Bug report / Share)? Yes

Backtrace for this error:
#0 leqsol_MOD_dot_product_par._omp_fn.0
at leqsol_mod.f:1064
#1 GOMP_parallel
at ../../../libgomp/parallel.c:178
#2 leqsol_MOD_dot_product_par
at leqsol_mod.f:1059
#3 leq_bicgs_mod_MOD_leq_bicgs0
at leq_bicgs.f:330
#4 leq_bicgs_mod_MOD_leq_bicgs
at leq_bicgs.f:91
#5 solve_lin_eq_mod_MOD_solve_lin_eq
at solve_lin_eq.f:165
#6 u_m_star
at solve_vel_star.f:358
#7 solve_vel_star_mod_MOD_solve_vel_star
at solve_vel_star.f:134
#8 iterate_MOD_do_iteration
at iterate.f:255
#9 run_fluid
at mfix.f:188
#10 run_mfix
at mfix.f:142
#11 main_MOD_run_mfix0
at main.f:79

I see that your solver has both SMP and DMP enabled. While this should be OK, I think it might be the source of the problem (since the crash is in a function marked _omp_fn). Try disabling SMP and rebuilding the solver.