Using Logic Pro 8 I can no longer see or edit controller data in the Piano Roll Hyper Draw area. The data are there (as shown in the event list). I tried closing and reopening the project, quitting and restarting Logic, selecting different midi channels within Hyper Draw. All to no avail. Still can't draw or see anything in the HD area. One thing, though: it works fine in a new file! Does anyone have an explanation or, preferably, a solution?