Can you try recreating the users configuration folder again.
Close DW, and rename the configuration folder, then open DW to have it recreated.
Close DW again and open the extension manager, in the extension manager uninstall the extensions, then install them again using the latest versions. Open DW and make sure the WebAssist installer runs, then restart DW again.
if you still have a problem:
Please provide a Skype username or a US phone number and a good time to contact you when you will be in front of your computer and we will have an engineer contact you to resolve this issue over the phone.
We are available Monday - Friday from 9am - 4pm EST (except major U.S. holidays).