Super Mario 64 - I get caught in an infinite loop when trying to enter the 30 stars door

[Shellshock]

Hi there,

I recently started playing Super Mario 64 again and have enjoyed every minute so far. As many of you already know, in order to open the 2nd star door you need to have 30 stars. Well, today I've finished collecting 30 of them and wanted to open the door. That's where the infinite loop starts. Mario opens the door using the star power and I get a message saying "Reacting to the star power, the door slowly opens". However, the door does not open - Mario takes one step back, opens the door using the star power and I receive the message again. Restarting the game does not fix the problem either.