I have just had the can't enter strip glitch happen but then i got the cowboy hat so it was fine. Then when i was roaming the mojave desert, legion assasains come and attack me, so when i go into vats the whole game freezes and my xbox 360 does to. What is this, any way to fix it?

Do you have a companion with you at the time of this bug? Have you re-loaded your save (Before Mojave if possible)? And, are you tracking a certain quest at the time this happened?

I had Boone and Rex with me, i was doing the house always wins 4 or 5 when you have to activate the electicity thing in the El Darado electrical place, and i have tried re-loading my game.

About the freeze:

-Does it freeze straight away when loading?
or
-Does the freeze happen when the Legion Assassin's encounter you?

It happens whenever they attack me and i go into vats, when ever i select them in vats i can hear the gunfire and guns in the background but the picture stays there and my xbox and game freezes. I can still hear guns and the radio in the background

Why don't you just run away from them (And make your companions follow you), or fight them without VATS and then see what happens?

will do, i'll try tomorrow and let you know

=) You're welcome.