This has never happened before. I've tried it on my machine, and on a virtual machine on my network. Same result.
I'm trying to do a high resolution renderings. Everything looks like it should, up until the final few minutes. Then this is what I get as a result (see attached).
Low res rendering works like it should. I'm doing this for a 4'x8' sign, so it needs to have as much DPI as I can get.
Any ideas??