I recently deleted a largely unused drive partition and converted the disk space to my main Windows 7 64-bit installation. Unfortunately, I forgot that my Calibre program installation (though not the library, fortunately) was on it. I tried to download the installer and just reinstall calibre, but I got an invalid drive error message and the installer failed. I then tried to go through the Control Panel and uninstall and/or repair calibre, but I got the same "drive invalid" error referring to the same deleted partition (z
. I'm at a loss to figure out how to reinstall the program at this point so I can add new books. Any suggestions?