check to see if you have anything running. download the install... close the browser.. then right-click on the install binary and run-as admin.

once installed... drag the icon to the desktop.. and right-click.. run-as admin.

if that still crashes, then you either have a bad download (you did get it from http://solidice.com/keyclone .. didn't you), or a corrupted mfc71 dll is loaded in memory and being used by some other program. try turning off anything you see in your tool tray (lower right)... then re-running (always as admin)

if you still have no luck, voice comms would be easier. let me know if that's the case