Hi,
I looked at your save and all I can think is that you started the presidential campaign too soon.
I did the same thing, and I couldn't start the Perry Hotter photoshot after that. And it did the same thing to me as long as I hadn't read the 3 books
For some rason blablabla a ball gag blablabla ( and of course I already had this ball gag in my inventory )
You must complete all photoshots before the campaign begins. Everything else seems ok to me.
You finished the other photoshots, all the events with Sydney in the park, Camille and Mandy arrived at the Mc (not sure if all these events are necessary, but not sure if you can do them after or during the campaign), you have read the 3 books and you have the ball gag.
Maybe
WillTylor or
strenif can confirm or deny? They certainly know the mechanics of the game better than I do.