Where's the problem?

I recently ran into an issue with Flex Builder where the Problems tab wasn't accurately reporting information. It would show me the error, but it would simply show the project name under the resource column.

All the normal attempts to resolve the issue didn't work including cleaning the project, recreating the project, and even reinstalling Flex Builder (w/2.0.1). Finally, the only thing that resolved it was deleting all of the files and rebuilding my source code from SVN.