I have SimCity 4 + Rush Hour + all available SC4 updates installed. It's been running without crashes for quite a long time now and I haven't done any driver updates in at least a year. Anyway, recently I encountered a problem that causes Simcity to sometimes freeze during exit or save. Last time it crashed right after save meaning that now I have a broken region map with simply a hole where one of my cities used to be. I can't load the city, because it can't be selected. Changing resolution did not help (I hoped it'd draw the maps again). Because a picture tells more than a thousand words, look at the attached picture of San Francisco region map.
Please help. I need my city back.