The AC is probably not at fault for your engine quitting. I'm not sure if this applies to your car, but the notes for the 210 say to set the version code P2 to ignore the refridgerant level in all cases. This almost certainly doesn't apply to you (as adding 16 caused the AC to run), but if 16 were previousely added and you added 16 again, you would be turning the 16's bit off and the 32's bit on, which is not what you want.

I'm fairly sure that you have some variant of the OVP or K40 module. It's much more likely to be at fault than anything in the AC. But also consider the crank position sensor as a likely suspect.