Ok to anyone who is getting the error while taking Alexandra panty, I found walk-around that might help you get the panties and prevent the crash of the game at the same time.
Here is what I tried and it worked:
1. While playing the game when you get close to the spot where the error happens, SAVE at the moment when the last choices come up, right before the option of getting her panty Than shut the game off.
2. When the game is off DELETE the "game" folder by it self and leave the rest of the files as they are.
3. Extract the new "game" folder from the compressed game to where the original folder was that you deleted.
4. DO NO I REPEAT DO NOT put in the Ipatch or any of the MOD's for now. (JUST WAIT!!!!!!)
5. Start the game and LOAD the last save, in this case it should be the spot where you have the chance to stay or leave. STAY!!!!!!
6. Get to the part where it tells you to grab the panty, do so and grab that which you desire
. You should by this time get a notification that you unlocked new achievement and the scene will continue.
7. Now I stopped at the moment when Alexandra was in the bath "playing" and made a new save. If you want do the same or just finish the scene and once you get back to the free roam, SAVE than.
8. Shut down the game once more and extract the Ipatch and the MOD's to the new "GAME" folder. Only do this step if you want to continue to use them with the game. I personally did so.
9. Start the game once more and LOAD the last save you made and your should be good.
I know its lots of steps to do it but they working for me.
I do not know where the exact issue is, but either the Ipatch or the MOD's are causing the issue with that part, who knows.
If you like try my way, than let us know if it worked for you as well, of just wait for a fix to that issue.
