Apparently the XAML file included in the latest release (0.2.0.0) of the AX TFS Build Workflow on CodePlex had an error in it. I apologize for not double-checking this before releasing. Thanks to those of you who alerted me of this issue.
I have fixed and uploaded the new XAML file and updated the existing release. If you downloaded the 0.2.0.0 release prior to September 17th at 16:40 Mountain Time you will want to download again to get the fixed XAML file.
The issue was a stale property in the XAML file that was used for debugging and did not get removed properly in the released code ("SkipNoCompileOnImport").
You can download the updated release from CodePlex.