ChunkCache question

[sphinxc0re]

I worked around it but another problem opens itself to me. I am getting an errormessage:

Code:

[18:18:56] Verification failed: m_World->GetChunkData(a_ChunkX + x - 1, a_ChunkZ + z - 1, Reader), file /var/lib/jenkins/jobs/MCServer Linux x64/workspace/src/LightingThread.cpp, line 335

What is this???
It aborts after this because of a SIGSEGV