Problem fixed (embarrassingly) by restarting the computer. Not sure what could have made the problem originate other than changing my IP address to fiddle with making multiplayer work.

Hi everyone. Thank you for the replies. Let's see...

i. I am using Windows 8.
ii. I am not sure what you mean by installation, but I play and downloaded this game through Steam's client.
iii. log-file is as shown...
[spoiler = log file]
0.001 2016-05-10 15:37:54; Factorio 0.12.33 (Build 18092 ...

Hi everyone,

Everytime I launch Factorio after a period of time in between sessions(hours), I open the campaign and find that there are no additional missions. I've completed First steps and the first mission of New Hope, and I've seen that I am able to select those missions, but after the hours I ...