I'm no techie by even the longest stretch of the imagination, but I do know that almost all photo/picture/image software creates an index file to keep track of the images in a particular file. That .info file sounds like one of that type. As to why your software leaves that screen up when you're finished, I don't know.
Does this screen cause any problems, or is it one key or click to close it?
EDIT: Never mind, I took too long to post...lol.