Problem

Line: 333
Type: E_COMPILE_ERROR

THIS CRASH WAS CAUSED BY A PLUGIN

Code:
[324] $sender->sendMessage($this->getPrefix().$this->getMsg('setlobby_help'));
[325] break;
[326] }
[327] $this->setters[strtolower($sender->getName())]['type'] = "mainlobby";
[328] $sender->sendMessage($this->getPrefix().$this->getMsg('break_block'));
[329] break;
[330] default:
[331] $sender->sendMessage($this->getPrefix().$this->getMsg('help'));
[332] }
[333] return;
[334] }
[335] $sender->sendMessage('run command only in-game');
[336] return;
[337] }
[338] $sender->sendMessage($this->getPrefix().$this->getMsg('help'));
[339] }
[340] }
[341]
[342] public function arenaExist($name){
[343] if(isset($this->arenas[$name])){

 

Take a look at this thread. What plugin are you using?