That save is 100% of the story done, you'll have to load in the other girls at the terminals. Also, any girl can reject sexual advances at any time, so you may have just hit terrible luck.
1. Then you'll have to live with the objective message, also, you can limit yourself to the beach even after unlocking areas.
2. Except not everyone is getting crashes, mine runs just fine in that regard. That means it is a player side issue. If there was a random chance of everyone crashing, there isn't, that would potentially make it a game side issue, but most of us aren't crashing even once.