Moving to the Premiere Elements forum.
Some just in case notes....Timeline rendering is for getting the best possible preview in the Edit area monitor. It does not stop you from moving forward
in the project if you do not do it. But it is your window of opportunity to catch a problem sooner than later.
The program uses a line above the Timeline content to tell you whether or not you are seeing the best possible preview.
If you see no colored line or a green line, then no Timeline rendering is needed or possible.
If you see an orange line over your Timeline content, then the program is telling you that, to get the best possible preview, you
should render the Timeline content. When you do that, the orange indicator line turns green.
Therefore, two major questions in evaluating your situation...
1. Do you have an orange line over the Timeline content that will not go through the Timeline rendering process?
2. Are the gray tabs of the Work Area Bar spanning the full length of the Timeline content to be rendered?
Are you working with an Internet connection? And, are you getting messages from the program about activating any component
of your program?
Please check out Edit Menu/Preferences/Scratch Disks to determine where the Video Previews are directed
and how much free hard drive space is at that location. Also note if you have enabled the preference "Play work area after
rendering preview" under Edit Menu/Preferences/General.
Please review and consider and then we can decide what next.