Cant Downlaod Itunes

Hello,

WHY DOES IT KEEP SAYING IT CANNOT FIND %APPDATA% NETWORK WHEN I TRY TO DOWNLOAD ITUNES 9.2? IT STARTED LIKE A COUPLE OF WEEKS AGO AND SO I DELTED ITUNES BECAUSE I COULDNT GO ON IT BECAUSE IT JUST SAID CANNOT FIND %APPDATA% SO I DELETED ITUNES AND NOW I CANT REINSTALL IT ANY ANSWERS?