Attack of The B team serious problem?

Hello! Recently I just made my own server for me and my friend to share. I was extremely excited to try it out. Unfortunately, when I was in creative, and tried to give myself some things from the non-vanilla tabs (Dubstep guns, witchery items, ect.) the server crashes, saying End of stream. This happens with any modded items, and I cannot use the mod mob spawn eggs. This is unfortunate, and I'm wondering if there is a way to fix it. I wish you all well. I also have plugins, like Vampire, Commandbook, Jcommands, Demigods, and a few others that if you need me to read out I will.

Also, I've been having trouble installing the Vampire plugin into 1.8 craftbukkit, am I dong something wrong because it doesn't even recognize it as being on the server.


Thanks!


Sincerely,
IceSolstice

Ohhhh! Thanks, just figured that out that night. Hehe. I do have a request, to add a plugin, one plugin you can get that my friends and I enjoy is Vampire, but you cannot use it without MassiveCore. That's what a gathered at least because I've tried everything and on the forum it says it is needed!

Thanks again!