Compatibility with modelica.fluid.machines

[jabr23]

Dear AixLib team,

I'm having problems with the integration of modelica.fluid.machines.controlledpump (MSL 4.0) in my AixLib model in Dymola. The model is a heat pump system with two water storages and five m_flow controlled pumps.

The error is

I also tried swapping out individual pumps, which changes the equation but does not resolve the problem of being unable to differentiate the equation:

Therefore I believe that the actual problem lies somewhere else.
Are there any experiences concerning the integration of modelica.fluid.machines in AixLib?

Thank you!

[TobiasSpratte]

Please add a screenshot of your Modelica model

[jabr23]

This is the model with the modelica.fluid.machines.controlledpump: