Duplicate of: https://forums.factorio.com/viewtopic.php?f=11&t=27214

Load the old 12.35 save of the map in 13.4 or what ever is latest at that point.
If you don't have the .12 save any more, then you are out of luck.

I have the non auto-save from a few hours back. I was hoping there would be a ...

Because you're the only person I've seen say they have this issue that leads me to believe it's some hardware specific issue on your end and not something Factorio would be causing.

It is exactly what I thought, but different mouse, ports, and even rechecking the USB in the device manager have no ...

this is the log file for the error on my primary world. With over 80 hours, I do not want to lose this world save. Any and all help is appreciated.
0.001 2016-07-04 16:33:49; Factorio 0.13.0 (Build 22782, win64, steam)
0.001 Operating system: Windows 7 Service Pack 1
0.001 Program arguments: "C ...

The title is as simple as it sounds, a fair majority of any and all my left clicks do not register while playing Factorio, multiplayer and singleplayer. This has occurred since I bought Factorio on steam (a day or two after it was released on Steam)

My reports so far as my attempts to solve this ...