cvs history not working in 7.0.5

So I'm using 7.0.5 and I have two projects. In one I get cvs history on my files

in the other all of a sudden when I select CVS history all I get is an empty view with just

"Commit Message:" as it's title

no history for any file in the project is displayed.

what can change to make this happen on a per project basis?