OK, so I have been a customer of Adobe for many years. I am now retired and cannot afford the cloud structure pricing. I have several bugs in Dreamweaver 5, one of which replicates the editable region so there is a duplicate after the first one. I've managed to migrate my site to HTML5 without the benefit of Dreamweaver 6 (Ouch). Am I stuck up the river without a paddle?
Stuck? No, I don't think so. DW CS5 still works.
When things start to go wrong, See Deleting Corrupted Cache / DW Personal Configuration Folder: http://forums.adobe.com/thread/494811