So I'm trying to edit Red files in CS5 (I know; don't judge me) and all I get are error messages upon import. After several more failed attempts, I figured I'd just down-convert em (via Mpeg Streamclip) and just work with the converted files. Thing is, after doing so, alls I get is a black screen. The audio comes through, but no video. ?? Any clue regarding how to remedy this?