I made sure the drivers were updated, and I took a stick of ram out. So, if it doesn't crash then I'll try both sticks again and see what happens.
Well it may still not be the whole story. If it stops crashing with the stick you have in now, you still should swap them, and verify that it crashes using the other stick - that will pinpoint your problem to a specific stick of RAM. It also possible that your dual channel controller is flakey (i.e. a mobo issue), or that your two sticks of RAM while working perfectly individually (i.e. in single channel mode) simply don't work together in dual channel mode for no apparent reason. I've seen all of these combinations!