No Mods or Stuff, just the normal Version of Minecraft was used!
What I expected to happen was...:
Join my updated server (1.7.2 -> 1.7.9 R2 Craftbukkit) and play a bit.
What actually happened was...:
I joined but i could not enter the world. It kicked me out in the loading screen.
"Joining" disapears and CRASH.
Steps to Reproduce:
1. Use Version 1.7.9 or 1.7.10
2. Start the Game
3. Choice a SIngleplayer world or Multiplayerserver
4. Join it
5. Get the Crash
Related issues
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Comments

invalid as it is a modified server
I tried mc.vanillaverse.net and vanilla-ishpvp.org -> same crash
are you sure they are vallins? please attach those crash reports as well then
Not sure but they are listed as full vanilla servers, have you a full vanilla server to test this? But it isn't just the servers can't join any Singleplayer map. Older Maps and completly new created is the same crash.
thx for the help with the renderDistance,
problem fixed