Hello, and thanks for the answer. Attached source.f . I must underline - the simulation actually runs ok. All files are produced correctly. It’s just Flair does not show any progress (so basically this is just a matter of inconvenience because I need to manually check the file progress).
source_newgen_neutrons.f (18.9 KB)
In some other setups (usually where less custom-made materials were involved) Flair shows progress correctly.
The number of primaries does not influence this. The Flair just keep showing the status “not running” while the simulation is actually running.