So the crash they cause (I've tested them with only those 2 mods), could that be caused by adding new buildings/wonders? I'm not sure if CCTP removes any vanilla techs, but maybe adding buildings to non-existant techs could cause a crash. I got the crash 3 times in a row. I have turned off social policy changes from CSD, the only other change I can think of is if CCTP alters the world congress. This is a full list of the features in case you can pick out what might be the problem.
This mod includes 4 new diplomatic units, one new great person, one new specialist, one new improvement, two new diplomacy-centric buildings, six new national wonders, six world wonders (three used for WC projects), a modified Patronage tree, eight new world congress resolutions (and overhauls of all standard resolutions), nine new city-state quests and a modification of the AI's city-state diplomacy mechanic. There are also balance tweaks for religious beliefs, policies and civilization traits, as well as an intelligent system for AI gold purchasing of buildings and units.
Thank you very much for the help.