I think they patched this a while ago. Not 100% sure about that, but I tried it too, and it didn't work.
That glitch has been patched sorry to say.
But I found an alt. way to copy gold without removing to patch but you have to be a King/Queen to do it. It works the same way the old one did sort of!
Caution: This will make u corrupt(evil)
1.Go to the Treasury and get the second player to join.
2.Form a partnership with the player
3.Access the Treasury Finances and you should see all the gold from the second player listed as your own (the partnership feature is awesome)
4.Transfer all the second players gold into your Kingdoms Treasury
5.Once you have done so kick the second player like you would a chicken.
6.Re-invite the second player and access the Treasury Finances and all the money the second player had should still be there. Repeat as necessary (remember if you have too much gold it may cause the game to slow, this has been reported in some cases).
7.Once you have the amount of gold you are happy with start transferring it into your personal funds, do this without the second player present or end the partnership, why share the gold now?
Hope this helps if not try removing the patch and start a new game painful I know.
I think you have to clear out updates with this process: Link
However, you'll have to play offline and you're likely to get the glitch where you can't access Aurora.