Oh.. well then idk. Sorry.
You don't need to install it on the server. Install on your client and enjoy!
Do you stop your server with /stop, or do you click the big red 'X'?
If red 'X': Use /stop
If /stop, setup a backup system.
Just to tell you, if you use EssentialsChat for your chat manager, removing essentials would cause prefixes/suffixes to not work.
My best guess is that people are making nether portals in the nether, and it generates a new one in the normal world.
It's vanilla. Try toying around with /scoreboard.
Why are you using xAuth?
It means doesn't have enough ram, so the server can't keep up and just goes down. How much ram do you have for your...
What permission plugin are you using?
Just install vault in your plugins folder. The other plugin will link itself into vault.
Okay, joereider signing off.
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