PSAT - Simulink is not available on this system

Hello guys.

I have downloaded the Power system analysis toolbox (PSAT) from http://faraday1.ucd.ie/psat.html . I managed to open PSAT by running it from the command window, but when i try to open the library i get the following error

Does anyone know how to fix this? Simulink runs normally and i can even import solved examples from PSAT to simulink. But the library doesn't open