[Plugin: Cache Images] Images with spaces in filenames got messed up

Hi all. Had pretty bitter experience with this plugin. Pictures originally with spaces were grabbed to the server with %20 instead of them as well as %20 in HTML code in pages. And obviously as a result they did not display. Since there were quite a few of those images I had to restore the database. Now I’ll have to figure out how to clean up the chaos in wp-content/uploads folder. But my main concern in the end is is there a reliable tool [or way] to grab those external images? I got really disappointed when I saw the outcome and had to roll back 🙁 I would also appreciate any suggestions on how to clean up the uploads folder in the meantime. Thank you.

http://wordpress.org/extend/plugins/cache-images/