Yes, I have tried restarting my computer, that didn't work :/
I also tried bringing the compatibility down to windows 95...that didn't work either.
I'm really confused to why this is happening, because it was working perfectly for me before...
It may be some stupid glitch with the new windows 8.1 update, which has caused some certain windows 8 apps, such as skype to not work, although besides this, I haven't had any problems with normal, desktop applications.
Are there any older mine-imator versions up for download that I could try? If an older version works, it could just mean that the newest update is weird with my computer.
Another strange thing that you might want to note is that after I ran mine-imator, and all I got was a black screen, I eventually had to force quit it through task manager, because it just WOULDN'T RESPOND AT ALL. After I shut it down through task manager, I tried deleting it, so I could try re-installing for the billionth time, but it wouldn't let me delete it. It said the program was still running. I looked, and found that it was running in the background TOO, and when I tried force quitting it there, it said "access denied," so the only way I could FULLY close it would be to shut down, and reboot my computer.
That same problem happened to me every time I re-installed and tried again.