One more question (I have answered the above myself via experimentation). I got the following from Olimex, who I use to etch boards:
Hi, Your gerbers contain composite layers and negative plots (G36 G37 commands). On such gerbers we can't do DRC check, panelization nor to ensure correct phototools plotting. Please ask your cad vendor how to generate your copper pour with stroke hatch filling instead composites and send your files again. Thanks Can anyone answer his question? Cheers, Ben
