The timeline will randomly not respond to clicking "the playback arrow". This non-response occurs not just in the timeline playback option, but also affects the souce monitor playback, and the tiny preview area monitor playback atop the Project panel.
I don't know what to do. If I close the file and reopen it sometimes it will work fine or it will open with no playback response again.
Please Advise, (gotta a tight deadline hangin' over me and I don't know what to do)
Please tell us more about your source footage and also your computer, paying particular attention to the video card and also the I/O sub-system, i.e. your HDD's, their size, speed, controller type, available free space and how you have them allocated.
Did you get an answer as to why your timeline would not play. I'm having the same problem in Premiere Pro CS4 on the PC.