I was up late editing last night and must have accidentally changed some default setting because the Trimmer is acting strange. Normally, when I play a clip in the Trimmer and mark the in and out points, the footage on the Trimmer timeline gets highlighted and can be added to the project timeline. However, now when I mark the in and out points, the timeline footage section doesn't change color--all I get are time selection brackets above the timeline tracks. Any ideas on what I mucked up?