Same here.

But just pressed blueprint library button in multiplayer. Can't load anymore.

0.000 2017-04-25 14:22:33; Factorio 0.15.1 (build 29050, linux64, steam)
0.112 Operating system: Linux (Ubuntu 14.04)
0.113 Program arguments: "/home/dorgas/.local/share/Steam/steamapps/common/Factorio/bin ...

I will explain what happened when playing:

No coal for boilers -> no electricity -> no lasers working

Then bitters raided the base from lasers side.

Next time I suggest only turrents to guard the base and miners zone.