I am having this same issue repeatedly on multiple different play-throughs. The workers don’t even walk towards the sword or item when I promote them or even enter the promoting activity at all.
Windows 7 64bit, Intel i7 Haswell, 16 gb RAM, GeForce 660 Ti (up to date software)
Alpha 10_5-10
baaabca0-3986-11e5-a2e5-74d02b2be4d1