I was playing 4 Corners, which has a lot of planets (I think Ron made this right?) but anyway, the comps must have got a little too enthusiastic and they colonized A LOT of the planets and must not have had enough money to upgrade the population which, in time, then lead to them having no credits whatsoever. The graph at the end proved this to be true as NONE of the comps had any money. This could pose a major problem for really big maps. Maybe you fixed this in the AI overhaul??