shared memory error ubuntu

[morbidpoet]

Akka's Linux Server Launcher
Shutting server down...
kill: (5107): Operation not permitted
pkill: killing pid 5195 failed: Operation not permitted
pkill: killing pid 5197 failed: Operation not permitted
pkill: killing pid 5113 failed: Operation not permitted
Server shutdown...
morbidpoet@morbidpoet-desktop:/home/eqemu/server$ ./server_start.sh
[SharedMemory] [Info] Shared Memory Loader Program
[SharedMemory] [Info] Connecting to database
[SharedMemory] [Info] [MySQL] Connection [default] database [morbidpoet] at [localhost]:[3306]
[SharedMemory] [Info] Loaded default rule set 'default'
[SharedMemory] [Info] Initialized dynamic dictionary entries
[SharedMemory] [Info] Current expansion is [-1] (All Expansions)
[SharedMemory] [Info] Loading items
[SharedMemory] [Error] EQEmu Exception (IPC Mutex) in /home/eqemu/server_source/Server/common/ipc_mutex.cpp at line (79): Could not create mutex.
Server started - use server_status.sh to check server status
morbidpoet@morbidpoet-desktop:/home/eqemu/server$
Akka's Linux Server Launcher
Zones to launch: 30
Launcher already running... Exiting...

that was after shutting down the server

./server_stop.sh

Akka's Linux Server Launcher
Shutting server down...
kill: (5107): Operation not permitted
pkill: killing pid 5195 failed: Operation not permitted
pkill: killing pid 5197 failed: Operation not permitted
pkill: killing pid 5113 failed: Operation not permitted
Server shutdown...