Access violation at 010B1DA0 write?=0 address=0
19:22:45: ERROR[EmergeThread]: ERROR: An unhandled exception occurred: Access violation

In thread 9d4:
C:\tmp\minetest\src\server.cpp:328: EmergeThread::Thread: Assertion '0' failed.
Debug stacks:
DEBUG STACK FOR THREAD 274:
#0  MeshUpdateThread::Thread
DEBUG STACK FOR THREAD 9d4:
#0  EmergeThread::Thread
(Leftover data: #1  ServerMap::emergeBlock: p=(4,1,1), allow_generate=0)
(Leftover data: #2  ServerMap::createSector: p2d=(4,1))
DEBUG STACK FOR THREAD d9c:
#0  ServerThread::Thread
#1  Server::Receive
(Leftover data: #2  Server::SendBlocks)
(Leftover data: #3  RemoteClient::GetNextBlocks)
(Leftover data: #4  BlockEmergeQueue::addBlock)
(Leftover data: #5  ServerMap::emergeBlock: p=(3,1,0), allow_generate=0)
(Leftover data: #6  ServerMap::createSector: p2d=(3,0))
DEBUG STACK FOR THREAD e50:
#0  main
(Leftover data: #1  Server::step)
(Leftover data: #2  ClientEnvironment::step)
(Leftover data: #3  Client::Receive)
(Leftover data: #4  Client::ProcessData)