Basic Course 1 - Creating a Simulation (Task 1) 

The CoolProp library has a temperature range for every property that you ask for. If you ask a property value at a temperature outside the valid range it will throw an error. DWSIM, on the opposite, extrapolates the valid region in order to return a value and keep the simulation going on. This allows convergence algorithms to keep working.

@@DWSIMSimulator Thanks for the reply. I did not think the temperature 50 C was outside the valid range for CoolProp.

iebah1 each property of each compound has its own valid temperature range.

Your force stream phase should be on global definition for it to work. For me that was the case anyways

using excel or a python script.