OK Jason. I uninstalled and reinstalled DW CC and then reinstalled the extensions and now they are mostly working. There are a few application of Design Extender not working such as Google Map, social Media, CSS Menu Writer and a few more. The rest of it is working. One thing, Design Extender didn't ask for serial number while the others did, if that is of any significance. Might you know why Design extender is not functioning properly?