Obscurity - FULL RELEASE

[skafast]

I'm stuck ~.~

Found the blue and yellow rods but I can't find the last one... and no, I don't want to know where is it, but I found 2 problems while looking for it:

Spoiler below!

1st: If one goes back to the crypt using the front door after getting out of the morgue, the door behind him will be locked and he won't be able to get out of there because the way will be blocked by the stones.

2nd: After seeing Elizabeth's necklace flashback, If one goes back to the main character's house and get out again, he'll have to see it again.

I'm not sure if these will happen everytime or has something to do with the fact that I've saved the game, but it happens to me.