What are your source/target install directories. The installer seems unable to find the root drive.
To run the cleaner tool make sure you are running it as a user with admin privileges.
If the problems don't go please post the logs from these locations :-
• Windows 32 bit (XP, Vista, 7): \Program Files\Common Files\Adobe\Installers\
• Windows 64 bit (XP, Vista, 7): \Program Files(x86)\Common Files\Adobe\Installers