World Sometimes Fails to launch

[nickasummers 1]

Sometimes if I exit a world and then go back to it later without restarting minecraft, it goes from the world menu to the title screen rather than launching the world. If I then go back to the world list and try again, it goes to the loading screen, and says "Loading World" and "shutting down internal server" on the same screen and then stops responding before passing that screen. I haven't had this problem with vanilla or FTB, only TFCraft. I used the TFCraft launcher to install, and I added Rei's minimap on top of that. I have nothing else added. Its a pretty minor issue, but a strange one.

[Kittychanley 1,002]

Are you able to get a crash report when this happens? That way it would be a lot easier for us to understand what's happening.

[nickasummers 1]

Next time it happens I will try to get a crash report

[nickasummers 1]

Happened again:

---- Minecraft Crash Report ----// Everything's going to plan. No, really, that was supposed to happen.Time: 7/1/13 2:17 PMDescription: Sending packetjava.lang.NullPointerExceptionat net.minecraft.network.MemoryConnection.func_74436_b(MemoryConnection.java:169)at net.minecraft.network.MemoryConnection.func_74429_a(MemoryConnection.java:57)at net.minecraft.network.NetServerHandler.func_72567_b(NetServerHandler.java:666)at net.minecraft.server.management.ServerConfigurationManager.func_72354_b(ServerConfigurationManager.java:931)at net.minecraft.server.management.ServerConfigurationManager.func_72355_a(ServerConfigurationManager.java:128)at net.minecraft.server.integrated.IntegratedServerListenThread.func_71747_b(IntegratedServerListenThread.java:97)at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:674)at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:570)at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:127)at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:468)at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)A detailed walkthrough of the error, its code path and all known details is as follows:----------------------------------------------------------------------------------------- Head --Stacktrace:at net.minecraft.network.MemoryConnection.func_74436_b(MemoryConnection.java:169)at net.minecraft.network.MemoryConnection.func_74429_a(MemoryConnection.java:57)-- Packet being sent --Details:Packet ID: 4Packet class: net.minecraft.network.packet.Packet4UpdateTimeStacktrace:at net.minecraft.network.NetServerHandler.func_72567_b(NetServerHandler.java:666)at net.minecraft.server.management.ServerConfigurationManager.func_72354_b(ServerConfigurationManager.java:931)at net.minecraft.server.management.ServerConfigurationManager.func_72355_a(ServerConfigurationManager.java:128)at net.minecraft.server.integrated.IntegratedServerListenThread.func_71747_b(IntegratedServerListenThread.java:97)at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:674)at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:570)at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:127)at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:468)at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)-- System Details --Details:Minecraft Version: 1.5.1Operating System: Windows 7 (amd64) version 6.1Java Version: 1.6.0_31, Sun Microsystems Inc.Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.Memory: 93146360 bytes (88 MB) / 1025835008 bytes (978 MB) up to 1908932608 bytes (1820 MB)JVM Flags: 2 total; -Xmx2048M -Xms1024MAABB Pool Size: 1736 (97216 bytes; 0 MB) allocated, 1650 (92400 bytes; 0 MB) usedSuspicious classes: FML and Forge are installedIntCache: cache: 1, tcache: 56, allocated: 0, tallocated: 0FML: MCP v7.44 FML v5.1.43.679 Minecraft Forge 7.7.2.679 5 mods loaded, 5 mods activemcp{7.44} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->AvailableFML{5.1.43.679} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->AvailableForge{7.7.2.679} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Availablemod_ReiMinimap{v3.3_04 [1.5.1]} [mod_ReiMinimap] ([1.5.1]ReiMinimap_v3.3_04.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->AvailableTerraFirmaCraft{Build 76 Hotfix 17} [TerraFirmaCraft] (TFCraft-Universal-Core-B2-Build76Hotfix18.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->Available->AvailableProfiler Position: N/A (disabled)Vec3 Pool Size: 199 (11144 bytes; 0 MB) allocated, 192 (10752 bytes; 0 MB) usedPlayer Count: 0 / 8; []Type: Integrated Server (map_client.txt)Is Modded: Definitely; Client brand changed to 'fml,forge'