It doesn't support Windows 8. The Qt GUI is just for Windows 95/98, NT, 2000, XP, Vista, and 7. Maybe work is being done to update it for Windows 8 and phone GUIs. I'm more of a mainframe guy for running my Traveller apps on. They have to be ruggedized though, and survive things like nukes outside their bomb shelters. The usual EMP stuff.
The next beta I'm releasing soon has a smaller footprint and Traveller-ish looking font, along with images of the dice results.
ADDED:
I see that QT even detected an untested Windows it was running on. Cool.