Beta 2 introduced and renamed a few of the TitleBar Button images. I would advise everyone to uninstall Beta manually, remove the installed folder manually (..\Program Files\DisplayFusion), then re-download and re-install Beta 2. This will clean out some extra placeholder backgrounds and icons that I (crudely) created. There is no harm in leaving them, but they just won't have the same "polish" that the newer icons have, and they won't be distributed with the final release. Thanks!