Confirmed, all works now after removing that folder and re-installing.

Im getting this error when trying to start the game up for the first time.

I have tried uninstalling( then deleting the game folders off the HD) then running the Setup_Factorio_x64_0.12.20.exe file again with no change.
factorio-current.log : http://pastebin.com/gRWSvFH7
factorio-previous.log ...