by WhiteRider » Mon Dec 30, 2013 4:44 am
Did you make changes to your system so that the Windows TEMP folder is in a different place, or on a different drive?
Is your C: drive (or the other drive if you moved TEMP) nearly full?
Try freeing up some space and see if you can install then?
If you're not sure where your TEMP folder is open a command prompt (click Start and type 'cmd' and run 'cmd.exe') and type 'echo %TEMP%' and tell us what the output is?