I can't find the post but the MTU guys came up with a solution to the install problem that seems to work. Its a bit risky as requires registry editing. Uninstall all the MTU programs, delete program folders (be sure to back up and/or move any song and database files you want to keep), edit the registry to remove any keys concerning those programs. In other words a clean slate.
The thought is that this is a left-over from an earlier install-shield version. I haven't tried it yet but I am going to do it soon just to see if it works.
