No mods, gets to about 90% and freezes for a second, then the message about submitting the log to ya'll. Let me know if there's anything else I can attach. I was able to launch v16 before 16.3, updated today and now this.

0.000 2017-12-15 11:00:12; Factorio 0.16.3 (build 34357, win64, steam)
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