Problem with this application

This application has a serious problem. When you want to delete a user, it shuts downs my computer and reports a problem. Then all the data needs to be reentered. In the end, you have two users having the same name. This has happened twice. If I wanted to delete this second user now, the one I dont need, it will shut down the whole program. Since I have lost 7 out of 8 lbs, I dont want to try to make any changes that will upset this application.

Snapford about Weight Computer