In brief, there are some major mod conflicts between some of those I've been using for a long time and the latest version of Black Liquid's Journey released just before Christmas 2017. Even worse is the fact the worst of the crashing issues do not become obvious until your city reaches the 20 to 30 year timeline. The only one I know of for sure is the Cold Realism mod confirmed by my viewer Wicca Robin (see comments under Chapter 01 for the series.)
What I'm going to do is a reboot of the series using the same map and so forth, but minus the Cold Realism mod. If that can be played thru to the 30 year mark without running into crashing issues, then I'll start breaking the recording of that play thru up into several chapters for posting on my channel. (Minus that first Chapter which should be very similar to the one finished.) If crashing issues continue, more mods will have to go and then try another reboot. Hopefully it won't be too hard to sort this out! When I do get that sorted I'll make another post here on the blog with a revised mod list.
As always, thanks everyone for your comments and support!
Footnote!!!! See updated mod list for reboot!
(Scroll down thru intro section. Sorry, Blogger's software doesn't let me create internal Anchor type links within one.)