I wanted to investigate these a bit to see what might be causing the problem, so I tried to unpack them with the script snowdrift posted here: viewtopic.php?f=23&t=2828 but unfortunately that didn’t work… perhaps the .gsb file format changed in the past year?
The problem deployments are fairly easy to find, you might be able to automate it server side. I just look for challenges with no ratings (because the game crashes before you have a chance to fight, much less rate) and with attempts but no victories. A good proportion of these seem to be the game-crashers.
Then there is one more I found, 4609113, which crashes the game immediately upon download; the other ones above allow you to get to the deployment screen, but not this one. Hmph.