There are no users who encountered this problem which means that it's local and the program's functionality is affected by an application installed on your computer, security rights, or its own installation.
First close all the background programs, then perform a re-installation of the software. When you run it for the first time, right click its executable and select Run as Administrator.
From this point forward, try to work with fewer images and watch the behavior because it's very likely possible the application encountered a problem because of a corrupted image.
