Hi,
I am having a related problem with version 3.6 of the Flex Viewer. I have token secured GP services. Server is 10.1.1. When I try to access them form the GP Widget, I am first prompted to login. When I cancel that, t he widget then appears, but when I click "Submit" I get an error message that says "Could not determine geoprocessing execution type:".
From what I've read this was supposed to be fixed in 3.3. The widget and same GP service works as-is in version 3.1 of the flex viewer.
I checked the source coud in v3.6 against all the suggested fixes, and they're there for 3.6
I'm stumped.