Yesterday, I wanted to do Cassidys' quests, so I went into the Lucky 38 casino, and told both Boone and Rex to go to the lucky 38. (I'm Sure)
So I go upstairs and recruit Ed-E and Cassidy, I go do several quests, and come back to get my usual party.
But Rex is gone.
I don't see where he could have gone, I'm on PS3, and Boone was in the presidential suite...
Help.

Same Rex was just standing there by the door to the suite and the next time i came to see him; he had disappeared.

This may help anyone who loses a companion member.
My friend lost Boone at the Lucy 38 casino and he was nowhere to be found.
He went back to Novac and retraced some of his steps but didn't find him.

Then he read online somewhere that if you lose your companion, go to the bottom of Vault 22.
Not sure why you would go there if you didn't lose them there, but sure enough, he went back to Vault 22 and had the elevator working already so it was easy to get to the bottom, and there was Boone!

Check it out and let us know if you find your lost companions there.

I told Rex to go back to the Lucky 38 just outside the Vault 21 Hotel. So I could go pick ED-E back up in Primm after his upgrade. Later on doing a quest involving the Kings I saw Rex next to the king, but he took off running right away.

All in all in the course of finishing the quest and turning in more snowglobes it seemed I had to follow rex through each zone to get him to go to the Lucky 38 suite.

Yea go to the kings place, I went in there after telling rex to go to my lucky 38 place, and rex came hurtiling down the stairs and ran towars the casino.

This happened to me... but one day I traveled to Freeside, and all of a sudden he spawned and ran towards the Strip North Gate and entered, I followed him and he ran into the Lucky 38.

Question: Why can't I send any of my followers back to the Lucky 38, after I sent them once I could never send 'em back.