Please post bug reports in the [http://www.qcfdesign.com/forum/viewtopic.php?f=3&t=219]DD bugs thread[/url]. It helps us keep track of the things that are wrong with the game to have them all mentioned in one place - This particular bug has been posted several times there as well
Sorry that it crashed, we'll get to fixing it once we're back. (I'm just doing a maintenance poke today)