Hey! legomaniac12! We have the same exact problem here as well. I even failed to back up my sons game before I tried this as all other saves we have done in the past worked out just fine. It was a sad sad day. Have you been able to figure out a solution? Does anyone know how to fix this or if there is a better save? I have tried other saves even that were not even 100% complete and I can still never make it into Diagon Alley. We can not get through that door with a downloaded save file. We can only do it if we play from the beginning. Does this mean that after a certain time in the game no one is able to go through the door to Diagon Alley?

For now my son plays the save file to be able to use all the characters in certain levels. He really likes to use Dumbledor and I think you can not use him unless the game is 100% complete. So he plays the game on the second file to be able to use the build mode since he can not get through the door to do it on the file that is 100% saved. UGH!!!