Everytime Im in the nether on a server it crashes until someone tps me away... ghast fireball noise

I was on my friends server on 14w31a when I wanted to go to spawn... we use nether portals when I went through it crashed. Tried about 5 times till my friend had to tp me away. When the game crashed it said that Ghast fireballs were not working so I went to single player and tested it but it worked fine. If you don't mind would you test it and fix the bug please, Thank you