How did you get both Boone and Arcade as followers (at the same time) on the PS3? On a later post you wrote you played on a PS3. Did I read this wrong?
During my gameplay on PS3, I previously had sent Cass and Ganon to the Lucky 38 suite, while having Rex and Veronica as followers.
After finishing Rex's quest, went back to the suite and when I found out they both had been taking some consumable items decided to send them back to their original locations:
First I dismissed Veronica (told her to go to the suite , in wich we were already in) then I did talk to Cass to rehire her but since my karma was too low she started to give me a piece of her mind and then I choose the bad option that turns her hostile to me (something about going back with her parents), so I had to put her down. Really sad because I went through all the trouble to finish her quest (killing the other characters that wronged her).
Right there I dismissed Rex hire back Veronica and somehow I was able to get Ganon as well. I don't know if this was normal or a glitch. Played for a while with both of them following me just to see if the game crashed but it didn't. Then had to send Ganon to the Mormon Fort because it's really annoying had to hear all of his whinning (especifically while sneaking).
Afterr that I haven't tried again.