I have upgrade 4 computers from Windows 8 to 8.1. On two machines I have problems with the jump-lists. They appear as they should and contains the right stuff, but when I click on an item nothing happens. And the Windows-X menu behaves the same, ite appears, but nothing happens when I click on any item.

Any ideas?

One machine is upgraded with the RTM-version from MSDN, and the other via Windows Store.

Thanks, Jesper