Bug: When you attempt to build a unit that takes Gildar (like a Catapult as shown) but do not have enough money, and then use the spell Alchemy to create Gildar, you still cannot build the unti until you close the production window and reopen it.

Steps to reproduce:

1. Have less than 100 Gildar and attempt to build a Catapult (or queue Catapults until you have less than 100 G left)

2. Without closing the production window, use Alchemy to make 100 G

3. The Catapult will be unavailable, saying you need more Gildar to build it

4. Close and reopen production window and you can build the Catapult.

Analysis: The game only checks to see if you have enough Gildar (and probably other resources) when you open the production window. Spells that update Gildar should update the production window as well automatically.