iTunes Match songs greyed out on 2nd PC everytime I relaunch iTunes?

I deauthorized all my computers and reauthorized them one by one. Then I did the same for iTunes Match. On the first one I have no problems and closing and reopening iTunes causes no problems. On my 2nd, I turn on iTunes Match and everything works well but if I close iTunes and then relaunch it ALL of content is greyed out and it asks me to sign out and sign in. After this iTunes Match wants to to "Add this Computer" when I already have!!! Is this just a bug? Should I uninstall and reinstall iTunes on that machine? This is getting really frustrating!