First report

**** CRASH ****
Hi,
I took a quick look at the save game. It loads fine for me, then I let it run a couple of minutes, and load it again, and it keeps working fine. At least, it seems I was unable to reproduce the crash you have on my machine.
The most likely reason for that is I did not download the assets you are using, namely:
-Crematory (upgraded)
-DP's 4x4 P. Lot w/ Fence Middle
-Local fire station
-Rural Station
-Sunken Plaza
-Suburban pool and picnic (4x4)
-Solar Civic Amenity Site
-1x1 Swing Park
-Gap-Fill Steetside Park
-m-pool
One of these assets causes the error "Mesh.vertices is too large. A mesh may not have more than 65000 vertices." in your log. This is not good, as the mesh failed to be created, the simulation data for that model is likely to be corrupted, so it may work for a while but when you look at that asset closely in your city, or when you mouse hover it i.e, that might result in a crash.
Also, unrelated but important, your log refers to an asset which is loaded but apparently not currently in your city (the Space Needle) has about 10 times the amount of vertices a LOD should have, if this building is placed anywhere, it will hurt the performances quite a bit but also, when batched with the other LODs may cause memory spikes. If you were close to run out of memory, this asset could be guilty of a crash.
If you are into investigating stuff, you could try to disable the assets I listed above + the space needle from your content manager and load the city. This will cause those buildings to disappear (and the log will report Unknown prefabs, which is normal) but it would be interesting to know if the crash still happens on your machine under these circumstances.
Remember not to override the save after disabling the assets are they will be gone for good if you save again while they are disabled.

Cheers