I must say that this expansion is pretty fun.  It would be more interesting if their was a mine sweeper ship, as right now there is no way to really counter them.

Now onto the Bug report.

Situation.

2 Human Players against a 2 other teams of AI.  2vs2vs2.  Each team was its own Race.  My brother and I were both Advent.  Problems started happenening mid to late game.  Was using IronClad Online and was using "Alloy" Technology.  Both players were.

Problems.

Starbases not upgrading at all. 

Negative money, was able to get around -16,000 Gold, -8,000 Metal and -8,000 Gems in all Negative numbers.

Misc. 

Game really needs a ship that can clear mines, but NOT a current Captial ship upgrade/ability.  Putting it on a current capital ship as a ability or upgrade would allow the player to make a less balenced fleet, hence more zerging.