Don't recall if the error message was the same, but on occassion I have had corrupted clips prevent playback. First, try removing the clip you modified, as it is the most likely culprit. If that clip is not it, you can isolate the problem clip by a 'divide and conquor' approach. Put In/Outs on a section of the sequence and play in to out -- usually 6 on the keyboard if you haven't remapped it. Once you have an in/out range that won't play, you know the bad clip is in there. Narrow the in/out range until you find the specific clip. Delete, re-capture and you're good to go. If that fails, then you go to the Avid Attic folder and retrieve the newest backup that will still play. Tim Selander Tokyo, Japan > I've got Avid Xpress Pro 4.3.0 on MacOS 10.3.2. > > I have a half-hour project, nearly done, which I can > no longer play successfully in Avid. I was modifying > audio gain on one of many clips within a sequence > by adding a keyframe. Then when I tried to play the > sequence to hear my change, I got an error dialog > saying just this: > > Exception: TS_IDSBA_INDEX_OUT_OF_RANGE > > I tried exiting the application and restarting it, but > I still can't play the sequence anymore. I tried > moving the blue playhead in the timeline, but I > still can't play the sequence. > > This is a showstopper. Any suggestions on how to > work around this? > > Thanks, > Rebecca >