I'v got a problem with this version 1.9.2
FML: MCP v7.51 FML v5.2.5.688 Minecraft Forge 7.8.0.688 71 mods loaded, 71 mods active
java.lang.NoSuchMethodError: net.minecraft.world.World.t()Lnet/minecraft/world/biome/WorldChunkManager;
at advsolar.ItemHSolarHelmet.updateVisibility(ItemHSolarHelmet.java:167)
at advsolar.ItemHSolarHelmet.gainFuel(ItemHSolarHelmet.java:145)
at advsolar.ItemHSolarHelmet.onArmorTickUpdate(ItemHSolarHelmet.java:88)
at net.minecraft.entity.player.InventoryPlayer.func_70429_k(InventoryPlayer.java:348)
at net.minecraft.entity.player.EntityPlayer.func_70636_d(EntityPlayer.java:591)
at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:858)
at net.minecraft.entity.player.EntityPlayer.func_70071_h_(EntityPlayer.java:339)
at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerMP.java:326)
at net.minecraft.network.NetServerHandler.func_72498_a(NetServerHandler.java:308)
at net.minecraft.network.packet.Packet10Flying.func_73279_a(SourceFile:136)
at net.minecraft.network.MemoryConnection.func_74428_b(MemoryConnection.java:89)
at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.java:134)
at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:53)
at net.minecraft.server.integrated.IntegratedServerListenThread.func_71747_b(IntegratedServerListenThread.java:109)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:675)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:571)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:127)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:469)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
--- END ERROR REPORT 7fa1fa1e ----------