deselect GPU Render - Solved problem.

Just sharing this in case it helps others. I have an older surface laptop that pretty much could not run anything past ON1 2019.2

I tried the 2020 beta but it produced only black exported images. I tried multiple combinations of the Preferences system settings to no avail.

However this week I installed the released version of 2020 on the old surface and the result was still the same if I left GPU Render option checked. If I uncheck this box though the program works perfectly and uses less system resources than 19.2