Sonic Control doesn’t have a separate ‘install’ program. Simply copy Sonic Control to the root directory of one of your hard drives. Do not place it under Program Files or in a folder on your desktop.
Ensure the files are not marked “read-only” by Windows. To double-check, use the right mouse button and select “properties”.
Right-click, “r2sonic.exe”, then select, Send to -> Desktop (to create shortcut).