Do you get any different behavior leaving IE9 uninstalled and using IE8 instead? Maybe try a reset with IE8 as well.

If that does not help then it looks like somehow you've got your IE mangled to such an extent that you may need to wipe your system and do a fresh re-install of Windows to get MoI working again there. Either that, or update to use the MoI v3 beta release instead of version 1.1 - the v3 beta release does not use anything from Internet Explorer anymore and so it's immune to this kind of mangled IE type situation.

- Michael