[09:46:26] [Client thread/FATAL]: Reported exception thrown!
net.minecraft.util.ReportedException: Rendering entity in world
        at net.minecraft.client.renderer.entity.RenderManager.func_147939_a(RenderManager.java:339) ~[bnf.class:?]
        at net.minecraft.client.renderer.entity.RenderManager.func_147936_a(RenderManager.java:271) ~[bnf.class:?]
        at net.minecraft.client.renderer.entity.RenderManager.func_147937_a(RenderManager.java:244) ~[bnf.class:?]
        at net.minecraft.client.renderer.RenderGlobal.func_147589_a(RenderGlobal.java:470) ~[bls.class:?]
        at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1214) ~[bll.class:?]
        at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1011) ~[bll.class:?]
        at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:945) ~[azd.class:?]
        at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:835) [azd.class:?]
        at net.minecraft.client.main.Main.main(SourceFile:103) [Main.class:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_67]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_67]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_67]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_67]
        at net.minecraft.launchwrapper.Launch.launch(Launch.java:134) [launchwrapper-1.9.jar:?]
        at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?]
Caused by: java.lang.ArrayIndexOutOfBoundsException: 7
        at lotr.client.render.entity.LOTRRenderStoneTroll.func_76986_a(LOTRRenderStoneTroll.java:34) ~[LOTRRenderStoneTroll.class:?]
        at net.minecraft.client.renderer.entity.RenderManager.func_147939_a(RenderManager.java:293) ~[bnf.class:?]
        ... 14 more

估计进存档也会闪退   mod自己挨个测试  看看是什么mod的问题

楼上误人子弟         这个解决的办法 我只有一些比较笨拙的，如果是有mod的服务器，你就把所有mod拷到一个新客户端上面，如果没有mod，那就去网下一个客户端，自己整理一下

可能是mod问题，但是如果是唯独他的或者几个人的进不去，就不是mod问题了，那是服务器地图区块出错了。来吧，楼主，我来救你。把他们的登陆的坐标给我（什么？你不会看？用/seen 玩家名）。然后我给你推算下是region中的哪个chunck文件出错了，你把那个文件删了，然后重启服务器就能好了。