In "Ultra 1" I have an income of 1000 stone; I just built 3 wall units, but I'm showing "69 ... -1492" under stone reserve.
Why?
What does that mean?
Is this a "bug"?
Am I somehow using more than I have and running into a negative balance?

PS:
I don't think I used more than I have because I just tore down two towers last turn to get a surplus so I can buy castle walls. This is very disappointing because I think it is a "bug" that is really causing my strategy and defences to be set back to the extent that I probably won't be able to meet the "deadline" we have set to start hostilities.

TR

PPS:
Sorry I think I know the answer.
It's because a full turn didn't pass and I only got half the resources but still I don't understand what that means about "-1482".
Is that the amount of stone that I used?
Now I tore down another tower and the balance now reads "485 ... -1086" So I guess it is right.
Sorry for hitting the "panic button".

TR