I have the same problem with the new FAN sliders. Just moving one of the two sliders makes the program stop working. Program shutdown with and without DMX-controller on USB.
DVC3 128 Fixture is Stairville MH-X50 Win7 Ultimate 64bit
I've found the bug, it is when you try and create a fan effect with only 1 fixture. Of course you cannot create a fan with only 1 fixture! Select the fixtures you want to include in the fan and it will work. We'll fix the crash in the next beta.
- First moved all four manually around using mouse and pan/tilt grid - Then used PAN fan, worked and BTW: looks great - Then moved the Tilt fader down (worked), the moved the Tilt fader up (program crashed).