Basically, the Canada level is awesome, but it is also COMPLETELY game breaking - meaning you have to start again and pray and pray that it doesn't mess up. Start again from the beginning, I mean. Selecting your class again. Doing all the quests again. Going through hours of dialogue and battles just to get back to your same point only to find that the same thing has happened again.
It's not just me complaining about it:
Although, granted, that is me bringing it to light, but there are many others who play the game who have come across this, and have no way of progressing.
However, it should be noted that my brother hasn't come across this - we got the game at the same time, downloaded it at the same time, got all the DLCs at the same time - yet he hasn't ever had to deal with this.