Well, I just attempted to update from 4.10 to 4.11. Now all I get is a black screen, with two applications open. Apparently the Plasma Desktop is complaining. Any help please. Soon.

According to the KDE bug report:
*"Executable: plasma-desktop PID: 1350 Signal: Segmentation fault (11) Time: 17/08/2013 11:09:22"