I tried to uninstall and re-install Qimage, but it still locks-up.
In order to try to help, we certainly need to know more.......
When did the lockups start? Have you installed anything new, new software, new printer driver, new video driver, anti virus software, just prior to the lock ups?
Try this for a fresh start.
Hold the SHIFT key down while you click the icon to start Qimage.
That will give you a fresh start. See if that cures it.
What version of Qimage are you running, type and version number?
Does it lock up immediately on opening, or when you are doing something inside of Qimage; if so, what?
Fred