Dev mode in ie8/vista32 - always see "Development Mode requires the Google Web Toolkit Developer Plugin"

When I try to use dev mode on my machien with ie8/vista32 I
continually see

"Development Mode requires the Google Web Toolkit Developer
Plugin" (the download plugin option). I was prompted once to "allow
addon to run" via the security bar but no longer and nothing loads.

How do I troubleshoot this? I have tried http://gwt.google.com/missing-plugin/MissingPlugin.html
but it did not work at all. I am on GWT 2.2.0 via maven central.

--
You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to google-web-toolkit+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.