I'm having trouble here as well where the installer extracts all it's files and then dies. I could have SWORN I saw a post on here a while back regarding a specific conflict with SpwywareBlaster and/or SpywareGuard, but can't find it now.
I disabled all protection in SpywareBlaster and exited SpywareGuard, but MC install still terminates after extraction. Running the Install Wizard executable from the user temp folder works fine, but is there any negative impact to installing MC this way? "Something" that a normal installation does must not be getting done now no?
Also, has anyone from JRiver been able to explain 'why' this actually happens? I've got tons and tons of apps that extract to temp then run their install - some of them also packaged with Install Wizard and a multitude of others like Install Shield, Setup Factory, Ghost Installer, etc and MC is the only single application that can't even install. Program usage conflicts with invasive spyware and virus blockers are understandable... but installations?