Originally posted by Cissamannen
Then you are doing something wrong

Load the save back in from USB stick, do the autosave first, and play until you can chose a dialogue after taking out LeChuck

and then, when credits start or whatever, load the last save on there and it should pop automaticly straight away.
Okay thanks, i'll try again and wait until the credits finish, then i'll load the last save. Will report back soon!
edit: confirmed working, thanks mate!
Here's the conversation with LeChuck at the end for those struggling:
Guybrush : Well, I can't believe your stupidity.
LeChuck : Yeah? Well, I can't believe your frivolity.
Guybrush : Well, I can't believe your enormity.
LeChuck : Yeah? Well, I can't believe your mobility.
Guybrush : Well, I can't believe your atrocity.
LeChuck : Yeah? Well, I can't believe your fragility.
Guybrush : Well, I can't believe your alacrity.
Then you get thrown over, pick up the beer and USE it on LeChuck. Later when credits start rolling, press START and load the last save and trophy will pop