This possibly comes under the category of 'not our problem', but my machine crashed while I was playing. When I rebooted, I attempted to reload Factorio, and all seemed well until I tried to load the previous autosave. Crash with an unexpected error. I didn't report it immediately; instead, I tried loading other save files, resulting in the same error. At this point, I started removing items from the config directory until I found something that made a difference. Removing 'blueprint-storage.dat' finally proved to be the culprit. The 'bad' file is 17.2MB large, but I have kept a copy in case you would like to take a look at it.
Error box reads:
I've just rerun with the bad file, and I'm attaching the log and dump files created. The actual save file is irrelevant because it crashed on all save files whether they required mods or not.Unexpected error occurred. If you're running the latest
version of the game you can help us solve the problem by
posting the contents of the log file on the Factorio forums.
Please also include the save file(s), any mods you may be
using, and any steps you know of to reproduce the crash.
Log file location:
C:\Users\geoff\AppData\Roaming\Factorio\factorio-current.log
Would you like to open the folder containing the log file?
Hope this is of help. Kind regards.
Geoff