This has been happening for a couple versions. I go into the cartographer's table, create a map (testing mods), select spawn no resources, and save. Then back to the main menu, hit New Game, and crash. Here's 5 dump files from me trying it many times. It seems to be the flag of spawning no resources, because there were times when I was able to create a map, then start a new game without a problem.
http://dl.dropbox.com/u/8949112/3/Elemental1_09v-2010-12-13T14-04-06-301.zip
http://dl.dropbox.com/u/8949112/3/Elemental1_09v-2010-12-13T14-09-48-303.zip
http://dl.dropbox.com/u/8949112/3/Elemental1_09v-2010-12-13T14-12-11-410.zip
http://dl.dropbox.com/u/8949112/3/Elemental1_09v-2010-12-13T14-30-36-394.zip
http://dl.dropbox.com/u/8949112/3/Elemental1_09v-2010-12-13T14-33-02-22.zip
I know I'm running mods, but as I didn't even get into the game, I figured I would post these.