Adobe Digital Editions won't open

[#1]

About two weeks ago Adobe Digital Editions 3.0 suddenly stopped working on my computer. I downloaded all versions of the app from 2.0 to 4.5 but none of them will open when I click on the icon and the message "The application stopped working" appears on the screen. I also tried to open it clicking on "Run as admin" but that didn't work either.

How can I solve this problem?

[#2]

Go to My Digital Editon Folder under you Documents.

Rename the My Digital Edition Folder to other name (My Digital Edition.1 f. e.)
Then try again to open.

[#3]

Hi, I tried to rename the folder but the app still does not open. Is there something else I can try?