Steve
Consider....
1. I have stills on the Premiere Elements 13/13,1 Windows Timeline. All are Timeline rendered and display the green indicator line above the content.
2. While those Timeline rendered stills are all selected, I go to Timeline Menu/Apply Default Transition and the transitions are automatically
popped into place between paired clips. The render indicator line above the transitions is orange; the render indicator
line above the clips are still green.
3, I then press the Render button above the Timeline. The result is a green line across the whole content,
stills and transitions.
ATR