Hi,
I am encountering a crash. It only appears to happen in a specific place on my server, I can roam the server just fine, if I avoid this one special place. After some more debugging I have narrowed it down. The crash happens RIGHT as I try to walk into a chunk that contains my witch farm. I can tell this because when I rejoin the server w/o forge after the crash I am standing on that very chunk border. the farm features larger amounts of redstone blocks, tripwire, hopper pairs feeding into one another and a drop shaft (possibly lots of lighting updates?). I have since copied the server world and ran it in singleplayer... same crash. HOWEVER if I TNT my witch farm to pieces, the crash no longer occurs.
Please note, that I am not using ANY mods (only forge clientside), neither on the client nor server.