TheSpoon, I've sent you two messages, did you not get them?
By the way, bugs I've found so far:
-Chapter 3: It's possible to save the villagers twice from the bandits. We killed all the attacking bandits and received the Potion of Greater Healing and the girl said "Thanks so much, I have a reward for you." Then I spotted a Bandit still alive and we killed that bandit and again the girl said "Thanks so much, I have a reward for you." and we received another Potion of Greater Healing. This seemed to mess up the loading code system as we received no code and had to replay the map. On the second play, this bug didn't happen.
-Chapter 7: We received no loading code at the end. I've sent you a message that answers your questions in detail.
-Chapter 9: 1. Once Arthas gains Frostmourne, all your spells are unlearned. You have to redistribute all your skill points again. This happens in insane mode. I don't know if it happens in normal mode too.
2. There's something strange going on. I opened the ninth map and I spotted that Insane Arthas gains 22 bonus damage once he has Frostmourne but he retains a Hero attack, while Normal Arthas gains only 12 bonus damage, but he receives a Chaos attack. Normal Arthas also gains two to all attributes, Insane Arthas gains none.
On the next map, however, Arthas has 10 bonus damage and a Hero attack and no extra attributes.
3. Captain stops gaining experience once Level 10, but Arthas can go up to level 14. Perhaps this is related to losing your skill points and stuff when creating Insane Arthas. Perhaps you forgot to disable experience gain for Arthas with Frostmourne.
4. Even though Arthas can go up to level 14 on Chapter 9, on the next map, Isolation, he's level 10 again and both players lose all items.