Supercritical CO2 for Molten Salt Power Tower plants.

Dear Paul,

I'm trying to simulate Gemasolar plant (Sevilla, Spain) with different power cycles. Now I'm trying the recompression sCO2 cycle, but I found this error when calculating the design point:

exec fail(sco2_csp_system): The compressor inlet temperature input was 87 [C]. This value was reset internally to the max allowable inlet temperature: 70 [C]
The turbine inlet temperature input was 35 [C]. This value was reset internally to the min allowable inlet temperature: 300 [C]
To solve the cycle within the allowable recuperator conductance, the design cycle thermal efficiency, 0.445, must be at least less than the Carnot efficiency: 0.401291

I suppose that I'm not misunderstanding some inputs:
Air cooler approach temperature refers to "compressor inlet temperature"?
PHX approach temperature refers to "turbine inlet temperature"?
Furthermore, any advise about any other cycles that I could simulate in SAM por MSPT plants would be welcomed!
Thanks for your help!

Javier.