23:07:39 mangos-worldd: Map.cpp:516: virtual bool InstanceMap::Add(Player*): Assertion `groupBind->save == mapSave' failed.

Program received signal SIGABRT, Aborted.
[Switching to Thread -1448031344 (LWP 4011)]
0xb7faa410 in ?? ()
(gdb) bt
#0  0xb7faa410 in ?? ()
#1  0xa9b0bf68 in ?? ()
#2  0x00000006 in ?? ()
#3  0xb79268b1 in abort () from /lib/tls/i686/cmov/libc.so.6
#4  0xb791e08e in __assert_fail () from /lib/tls/i686/cmov/libc.so.6
#5  0x081714f3 in InstanceMap::Add (this=0x8c870c8, player=0x9f52240) at Map.cpp:516
#6  0x0834e974 in WorldSession::HandleMoveWorldportAckOpcode (this=0xb096d2f8) at MovementHandler.cpp:51
#7  0x082dafca in WorldSession::Update (this=0xb096d2f8) at WorldSession.cpp:576
#8  0x082cf9c7 in World::UpdateSessions (this=0x85d1820, diff=104) at World.cpp:1951
#9  0x082d6a31 in World::Update (this=0x85d1820, diff=104) at World.cpp:987
#10 0x080f7feb in WorldRunnable::run (this=0xa5911680) at WorldRunnable.cpp:61
#11 0xb7bafcf9 in ZThread::ThreadImpl::dispatch (parent=0x85ae838, impl=0xaa83f9c0, task=@0xa9b0c394) at ThreadImpl.cxx:407
#12 0xb7bb2364 in ZThread::(anonymous namespace)::Launcher::run (this=0xbf92198c) at ThreadImpl.cxx:49
#13 0xb7bb5e2c in _dispatch (arg=0x6) at posix/ThreadOps.cxx:137
#14 0xb7b724fb in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#15 0xb79d08ee in clone () from /lib/tls/i686/cmov/libc.so.6