Hi there,
I am totally baffled by this! It is like the preview panel is completely ignoring the fact that I have added a PNG file to the timeline.
I have done exactly this before on a Mac and now on Windows 8.1/Dell and it is not working. The image file is correct - as you can see in the source panel - but I also used the exact same file on a Mac and it works.
Thank you so much for any help you can give. The project is on a complete hold at the moment.
Lydia