[0.12.0] Game crash upon equiping ammo and handgun

[deafgeek]

I place the handgun and ammo into the 2 slots in the bottom right and upon placing the last item whenever it be the ammo or the handgun, game freezes and crashes. I can not progress past the equip handgun on the tutorial mission 2 due to this.

Windows 8.1 64bit, Factorio 0.12.0 64bit.

(attached is the current.log)

Rolling back to 0.11.22, I am able to equip the handgun and ammo and progress through the tutorial missions.

[Xunie]

If you're doing the campaign? Second level?
Yeah. I can confirm it happens here too.

(Win 7 x64, Factorio 0.12 x64)