bug with resources not showing

[ecc]

In a game that I'm playing, on one turn I will goto city screen to select to build a knight and it shows up greyed out and tells me horses required even though I DO HAVE HORSES and they're connected by road and pasture built on it. And than on the following turn it is no longer greyed out and works and than somewhere randomly in the future the same thing repeats itself. The same is going for other resources like ivory for building war elephants, its very annoying and I wanted to know if anyone else is encountering this!!

-Ryan

 

[warpstorm]

Are you trading them away? You are allowed to trade away your last one.

 

[Ogrelord]

maybe you had your ressources traded with another civ? and the deal ended.
i never traded anything unless i have 2 sources of it.

or maybe the ressources was on a cultural boundary and it keeps switching between civ as the culture "fights" for it.

 

[ecc]

No the resource is clearly on my side of the cultural line and right next to my capital in fact, I own it. It lets me build horses one turn and than not the next and same goes for elephants. Its as if the computer thinks the resource is disappearing every other turn. I don't know whats going on, its really screwed.