Soon as I put down wire to build fence game crashes

No if u leave game with a zombie near and it notices you. It will hit you until character logs out. When leaving a server your character usually stays in game for about 15-20 sec.

I usually put the gun in my hands and press Y on the clip. If that does not work equip gun on your back and remove clip by clicking right stick on gun so it will pull down a drop menu for the attachments. Then just hold A on the clip and put it into back pack. Put gun back into hands and press B over clip to put back in. If it gets clip out but want reload try dropping gun and clip and retry. All else fails bro just leave server and try again. Usually works for me.

Wait one hour and then it should let you join a server.