Shoutbox

The error box you see is related to an explorer extension on your computer. (An extension that isn't very well crafted since it causes an error and since it doesn't identify itself.)

The proper function of this extension is probably to display tooltips for files, create thumbnail previews and/or add extra context menu options. When you browse a folder with movie files, one of the first two are probably attempted. The extension fails, and Windows shows you the error message.

I wouldn't install CCCP if you are not going to be using it. Especially if you aren't sure of what everything it contains is for and how it works, it can cause strange problems that are hard to find (like what is happening to your computer now).