Who else has the same problem as me? I don't usually built miner walls, but sometes when I do, the miner just stands in the place where the wall should be and when I look at it miner wall is reloading and I lost 200 gold for nothing.

You can't build more than 2. Maybe you were trying to build a third?

2 is the limit.

No, it happens even when I have less than 2

Hmmm. Are you clicking in the right place? Like, between the first and second walls of gold?

That does happen if your trying to build:

More than 2
In an invalid zone
If it gets destroyed as your building it

Quote from KillerPixel

That does happen if your trying to build:

More than 2
In an invalid zone
If it gets destroyed as your building it

Sorry about this, but it's *you're
In an invalid zone, it cancels itself and tells you about it.