I was playing crotas end on hard mode and was about to beat crota, then all of the sudden the game glitches out and returns me to the menu screen, so I thought it was a error, so I press A and waited for a error to pop up, then stingray appeared on my screen, after waiting a hour for the error to stop, I got on my hunter so I could rejoin my friends, which were still on crota, but I needed to switch my abyss defiant to the last word, so when I pressed the start button on my controller, I go to switch my primary and I notice I was missing my vex, I checked my lvl 26 warlock to see if it was on my other character. It wasn't there, so I thought I could of put it in the vault, so I go to the tower only to find out that my vex wasn't there. I was really frustrated, other than the fact that the vex was one of my only exotics but I took the time and effort to earn it and now the only exotic weapon I have is my last word. If anyone could help i would appreciate it, but I don't know what to do, because all of the people that join me on vault of glass hard mode keep dying on the conflux checkpoint, I'm getting really impaitant with this.