In the attcahed picture I have some void areas in the gnd plane that I can not get rid of. I have tried turning all colors on to see if there was somthing hiding there, but nothing shows up. Screen redraws and closing / re-opening board file have no effect.
What are these mysterious areas and how do I get rid of them?
You can also try this:
close all layers
open only "boundary" for that layer
then delete the shape
then update your plane
then those voids would be gone for sure,