Iron Collection Glitch
I'm running C+C 1.76 on Steam and this is the third time I've had to abandon a game 6 hours in. At a certain point, my laborers stop collecting iron ore off the ground. They will go over, smash the rocks into ore, then piss off and just leave the resource lying on the ground. I've tried placing a building over a lode of iron but they refuse to clear it. I've tried building an iron stockpile on top of / around a lode - same problem.

Does anyone have a fix for this?
Have a look at your limits: Iron ore doesn't fall under the Iron limit, but under the Ores one (second line, middle spot in the recap window if I remember right. If you have lots of other ores / minerals in town, you might have reached that limit without noticing.