My friend was having that exact problem. As a newbie, he had no idea where the fire was coming from, all he knew was that he was taking the tutorial to learn how to play the game, doing EXACTLY what the tutorial said, and being unable to complete the mission. After 20 minutes of trying, he gave up and moved on to a different game.
So... Devs, PLEASE fix this... or at least make it more clear! A tutorial should be perfectly straightforward, and not at all frustrating!
To compound the problem, he said something like "The other wizard challenged me to a personal duel, so I have to take my wizard over there". I don't know what that means, but he was convinced that he had to physically move his wizard across the river.
I just don't want people to buy the game and be so frustrated with the tutorial that they quit!
As such I think this thread is so important that it merits sticky status, at least until the team notices it=)
-Cherry