I haven’t played to CS with the latest patch, but I confirm that the release of the patch 1.0.7a has been quite crappy. I haven’t teste 1.0.7c yet, so I’m not sure if I’ll be able to continue my existing cities or if I’ll have to start brand new maps.
It seems that the crashes in CS are also linked to the various Mods installed by players, like it happened also on TF. The devs are suggesting to test the game first without any Mod on a new map, then trying to activate the Mods and start an old savegame. If the game crashes in the second case, the problem is certainly linked with one of the Mods.
Patching a game while keeping user created Mods alive must not be an easy task for game developers.