I've still got the old Availability Tool 1.64 on one of my computers. I'm tidying things up and removing unused programs and so I tried to remove this. It has two entries in the Install/Uninstall section of Add/remove programs, "Availability Tool" and "SabreTool". Clicking on either of them results in "Falscher Aufruf" and the program not being removed.

How can I clean up this mess and properly deinstall it. (ie. Completely remove the program, the entries in Add/Remove programs, any registry settings, etc.)