Thanks, but this does not help, I had deleted the WinFileCache_1-E4854B7D.dat before logging this problem and the workspace seems not to resolve the problem.
Dreamweaver is hanging after on for a short period which wasn't before I installed the Design Extender. By the way I had the Databridge before Design Extender, could the sequence of installation have anything to do with this problem? I do still get the same error message.
"At line 24 of the file "c;/users/annyka/Appdata/Roaming/Adobe/Dreamweaver CS6/ en_US/Configuration/Floaters/WA_Memento.js". document.reminders/WP.document has no properties."