Congratulations on finally fixing all the damned bugs. And now i must ask, were you even aware of the blacksmith bug or was it fixed by accident?
For those confused; gather all the food for a troop or tactic upgrade, start upgrade but don't leave smith, instead remove Dominations from active memory on your phone, start the game back up and you had the upgrade started and the foodcost refund. Yes, that means for example 5.2million upgrade of cannons started and researching, and 5.2 million food in your mills to be used to upgrade something else, like castle, barracks, alliance gate etc.