Microsoft have recently released a new version of their Team Foundation Server, TFS2008. Unfortuneately I noticed a change of behaviour in the server that causes the TFS integration that was included in CC 2.7.1 to break (it also broke the CC.NET integration as well by the way - or indeed anyone that does a Query of history between two dates). For more details see
http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=312511
I expect that the behaviour will be corrected by Microsoft in the server - however a workaround is easy enough for us to implement so we may as well allowing folks with the released version of TFS 2008 to carry on using CruiseControl.
I am working on a patch for this as we speak - should have it uploaded for you consideration later in the week, but I wanted to let folks know that there was a known issue and that I was working on fixing it.