Just fixed it. Sorry for the noise, guys.
This thread fixed it: http://superuser.com/questions/437708/how-to-re-install-an-app-that-shows-up-in-the-appstore-as-update-instead-of-b#answer-439700https://superuser.com/questions/437708/how-to-re-install-an-app-that-shows-up-in-the-appstore-as-update-instead-of-b#answer-439700
Thanks!