Thanks for linking these two. I agree that it's likely the same bug merely hitting at two different times.
When somebody nukes, then scores, the game believed, wrongly, that the overtime has been running since their nuke, when, correctly, the overtime should run since their save. geoo plays networked games with a debugging build, and it fails an assert in a contract. The contract is correct, there is a real bug here.
Should be fixed in next release!
-- Simon