In the midst of dealing with this crash on the demo version.
-Installed the steam demo AND the demo linked thru the factorio website (after the first launch of the steam demo failed)
-Manually changed the "graphic preference" for the game in Settings and AMD's Armoury C (it was defaulting to "high ...

feel free to delete, found the same thread right after submitting... apologies, haven't troubleshooted a game for awhile, bit out of practice.

Was recommended to give it a try, but can't even launch the demo! It crashes almost immediately and spits out the 'do you want to see the log and post on the forums' error msg. Restarted and no difference, and tried downloading the demo direct thru the site vs steam, and both still crash...

Log ...