Error "invalid (or unknown) saturation pressure"

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asked by about ThermoSolver

Hey,
My name is Marcel Rossetti and I'm professor of thermodynamics course (chemical engineering) in Brazil.
Last year I used the software thermosolver and it was quite excellent. However, currently I've tried to use and some errors showed up. It's not possible to calculate the equilibrium curves and to find to activity coefficient parameters.
When I try to "solve coefficients", it pops up the error "invalid (or unknown) saturation pressure".
I've uninstalled and re-installed the software but the error persists.

Does anyone know what is going on?

Thank you in advance!
Best regards,
Marcel

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