And...got it. I've attached the quickfix file but it can also be obtained from the SA mod wiki
The three fixed bugs are:
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.The three fixed bugs are:
- The game no longer crashes when attempting to start New Game+ from the Time-Frozen Basement after the True Ending. If you enter the basement fresh from the true end final boss, you will not need to do anything. However, if you load a save directly into the basement, you will need to "leave" by viewing the cutscenes in any of the side rooms and then return.
- It should now be possible to return to the basement from all of the viewable scenes for the expansion. You can no longer lock yourself out.
- Tsumugi's second character profile will now be properly added to the gallery. If the expansion is finished normally, this will be automatic. If you have already played it, you will need to enter (or leave/re-enter) the Clubhouse Village to make it appear. If you are already in the basement after the true ending, it should also be possible to obtain it through the same method mentioned in #1