Since some time my ADE 4.5 will not open. It appears on the taskbar, and putting my cursor on it I get a picture of it as it it should look if fully opened, but when clicking on it nothing happens; the program does not come up on the screen. Since several months back I am running Windows 10 and have installed all offered updates, but I don't think that is what is causing the problem, which has only started recently. Or could it perhaps have been caused by a recent Windows 10 update?
You can try this:
1) Right click on the Icon and run as admin.
2) Rename the My Digital Edition Folder under your Documents in My Digital Edition.old and start again.
3) Uninstall the current Version and install 3.0: http://www.adobe.com/support/digitaleditions/downloads.html