I'm on the go a lot, so I rip my movies from DVDs. After I finish watching them, I promptly delete them. Except this time CCleaner jams and refuses to delete the .mkv video. Here's a screenshot: http://i.imgur.com/tYgd0.png
It's really unnerving as CCleaner -- as well as all other Piriform software -- is really reliable. I appreciate any help I might receive.
Edit: It finished 'cleaning' my computer. I wasn't patient enough. Even though no one helped me (it is 4 in the morning), thanks for the awesome, free software.