Appdata

I keep getting this screen popping up, i have no idea what this file even is, no one has seemed to ever seen it before? I did a virus check and that can't be the problem.... help? http://i.imgur.com/Nod47sY.png < image of the dll error

So I was installing Clip Converter Desktop (a youtube download software - there is a web and desktop version) until it said it wanted to install in appdata. I don't really know what that folders for, but from experience most programs install in program files. So it makes me anxious to install...