Actually, EQ7 can be installed on as many computers as you like. However, it can be activated on only 2 computers at a time. The person that you bought it from would have to go into the program and deactivate her computer, thereby releasing that license and allowing it to be used on another computer. There is a video on the EQ site that explains it very well. My concern is that she uninstalled it on her computer without deactivating that computer first. Here is the link to the video.
http://electricquilt.com/support/act...n-error-codes/ Best of luck.