Hello, might I offer an observation:
Mac OS X App Store version user here, mine crashes fairly often using the Events and Decisions mod. I'm using v3 of the mod.
I often find if an Event successfully pops up, if I immediately SAVE the game before addressing the event (ie just hit Esc when it pops up and save my progress), the game seems to tolerate what I am doing. If I don't, it more often than not crashes.
Quick and dirty workaround, and the only other mods I use are Dynamic Cultural Overview and a buttload of custom Civs. But hopefully this may ease some of the frustration we Civ V hangers-on have with this otherwise most excellent and interesting mod
Many thanks to Sukritact for all the hard work - I did coding at Uni, I know how much you would have put into this. Thanks once again for the mad work