My game keeps crashing every 15-20 minutes. I'm playing on the MineZ server and I'm using Optifine and Rei's Minimap. My texture pack is the MineZ texture pack.
Crash Report
---- Minecraft Crash Report ----
// On the bright side, I bought you a teddy bear!
java.lang.ClassCastException: agp cannot be cast to afe
at axl.a(SourceFile:25)
at axl.a(SourceFile:10)
at axs.a(SourceFile:100)
at axs.a(SourceFile:93)
at avb.a(RenderGlobal.java:458)
at auw.a(EntityRenderer.java:1031)
at auw.b(EntityRenderer.java:888)
at net.minecraft.client.Minecraft.J(SourceFile:607)
at net.minecraft.client.Minecraft.run(SourceFile:535)
at java.lang.Thread.run(Unknown Source)
Crash Report