Thanks for the reply. I know you can't do anything about it, but I have to say that it always pisses me off to be told to rename the configuration directory. That really says, we broke your DW. I have a lot of other extensions besides WA installed. It is a major hassle that never seems to be recognized by the vendor.
If it helps, I found that if I disable all of my WA extensions (eCart last), I could remove eCart 5.07 without crashing the extension manager.