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That doesn't seem right.  Does the code work? If it does then are you placed by the door again after entering? If the map doesn't load when you open the door or get the code right, then this might mean the level is corrupt on your end. Reinstalling the game will probably fix that issue only if the level is indeed corrupt. There is a feature in the game that resets the progress if a level isn't found so in that case I think its a file corruption issue.