Morten Monrad Pedersen
I was rolling. At the end of the First Civil War, I had racked up 5 Achievements and banked 11 victory points. I had a total of 13 VP's. Oxford and Edinborough had rallied to Parliment. The Scots were rightly reduced to 2 strength. The Royalists were on the run. And then, I goofed. I used the wrong deck of Event cards; gold not silver. D'oh!!! Ten cards in, I figured it out. All that might have been, now never will. No doubt, 'twas another treacherous Catholic plot.
I did the same thing, but luckily I noticed it early enough to undo the changes.