I'm using a TI-NSpire CAS running ndless 3.9 and OS 3.9.0.493, I copied minivmac.tns, system.dsk.tns and vmac.ROM.tns to my ndless folder, but the app won't open no matter what I do. When I open it, the loading cursor displays for a few seconds and then nothing happens. I've also tried this on a classic TI-NSpire with the same results.