I have installed SpeedGrade CC, but it doesn't recognize any of my video clips, no thumbnails are shown and Adobe says "Error reading file". I have AVCHD clips, Canon EOS 7D clips, and some froma GoPro Hero3, none of these are recognized.
Here you have a list of supported formats: http://helpx.adobe.com/speedgrade/using/file-formats.html AVCHD and MP4 are not supported, but if Canon 7D files are in Quicktime wrapper, it should be readed.