I have the checkbox UNCHECKED for "Explorer extension" in MediaInfo Preferences because I like to create and maintain my own registry scripts for file associations.
However - every time that MediaInfo loads - when "Explorer extension" is unchecked in Preferences - it finds any verbs named "MediaInfo" under ANY key in HKEY_CLASSES_ROOT in the registry and deletes it.
For example, if I myself define: [HKEY_CLASSES_ROOT\VideoTypeRandomName5\shell\MediaInfo\command]
When MediaInfo loads - even though that registry key has nothing to do with it - it will still find it and delete it. This is a bug because it is deleting user registry keys of class type "VideoTypeRandomName5" because it found a verb named "MediaInfo" inside. It should not touch other registry key classes than its own. If someone wants to create a verb with the text "MediaInfo" for any purpose at all - MediaInfo will still delete it.
MediaInfo should not touch the user's registry unless the user gives her permission to.
Sorry for very late answer.
Some other people want me to remove any instance of "MediaInfo" provided by other tools. I think I should offer two options in that case.