Does not work with images containing a space in the filename

Hello and thank you for an awesome module!

I had to spend some time after I enabled and configured this module (and related modules) to get it to work. I finally discovered that the image I had used for testing this feature contained a space and thus did not show up in the teaser list (image uploaded with IMCE and inserted into body by FCKeditor). Maybe it would be possible to a) support images with spaces, or b) note somewhere in the documentation that the module does not support this.