Here's my save. Are you able to just sync the mods with it or do I upload them separately?

Did a bit of trial-and-error, looks like it's Railway Painter that's doing it for me. It crashes when it's enabled, doesn't when it isn't. Is it the same for you?

Save-file load progress bar fills up, then I get "Unexpected error occurred"

0.000 2018-02-01 16:09:27; Factorio 0.16.21 (build 35356, win64, steam)
0.000 Operating system: Windows 10 (version 1709)
0.000 Program arguments: "C:\Program Files (x86)\Steam\steamapps\common\Factorio\bin\x64 ...