Process_cq "settlement name" is a console code to automatically build everything in your building queue for the selected settlement in 0 turns, the expense will still be taken from your treasury.

What Olaf means is that your crash is likely to be related to a rebelling city, usually one of the faction under whose turn the game crashes, keep an eye out for rebelling cities near all of my crashes are related to this and as such somewhat easy to remedy if you get the problematic faction to grant you the region with the Force Diplomacy Mod and then build structures that increase population happyness before giving it back to its original owner.

The "Frequently encountered issues and suggestions for getting around them" thread here could perhaps help you more.