Thanks for opening a ticket. That reminded me of the other tech support and in one of my old ones, found the solution.
Shut down DW.
Delete user config (library/app support/adobedw) -- as you suggested
Delete gen pref (library/pref/adobe dw cs4 pref
(in this case I ran into permissions problems, my computer keychain etc. which probably contributed to the mess in the first place)