Digital Editions won't work properly

I work as IT Support in a chemical company, one person asked for help because his installed Digital Editions wasn't working properly.

Once he opens Digital Editions with shows just a blank windows, and if I open any of the menus it crashs. I tried to update to the latest available version, didn't work. The only thing that worked was when I ran Digital Editions as my user (that has administration privileges), that way it works fine.