When a player gifts 100% of all their gold to someone, the player will then be stuck with 0GPT for the rest of the game.
Anyway, do you have a gamelink Buffalo? I want to support the savior too ;)
At least, this doesn't happen in SingelPlayer games for me and as far as I can tell, the mod never interacts with GPT only Gold. So I wonder if there is something else making the GPT = 0