After Effects: Why does my background revert to black when I export?

[tornadofeet]

For a recent project, I chose a deep red background, but when I exported it, it was black!

Thanks for any help.

[seank47951705]

 Just chiming in here to say that THIS STILL ISN'T FIXED!  God, I HATE adobe products!

[Voyasart]

Hi everyone!

I have a solution that may help you. If you precompose and then add a solid layer with the background colour of your choice as the bottom layer, it should work.

Its explained in this short vid here: https://www.youtube.com/watch?v=ew2alobDsNs

I hope this helps someone out.