I fixed the problem, thanks for asking though.
I have a different question:
I am trying to simulate the flow of a polymer melt inside an extruder and I need to impose a certain pressure on the outflow (roughly 60 bar). There doesn't seem to be an option to impose a pressure on the outlfow. How would you suggest I fix this problem. Will Polyflow automatically calculate the pressures in the extruder up to the inflow? I am using an imposed volumetric flow rate, so there shouldn't be any reversal of the flow.
I don't expect you to give me the solution, but maybe enlighten me on how to approach this whole problem.
Thanks in advance