FTB freezing after a few minutes

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xWizz

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Jul 29, 2019
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Hey,

So I recently updated the monster pack to 1.0.4 in order to play on my preferred server. Before, I was getting almost no lagg at all but now, things are a bit more laggy (but I'ts playable). The thing is, after a certain amount of time playing (5-10 minutes) my FTB freezes and '(not responding)' shows up. It doesn't matter how long I wait, It won't respond again. I have to force FTB to close (sometimes through task manager) and then I can start it up again, only to being able to play for 10 minutes at the most. I never had this before.
Also, I can't show any crash logs because it doesn't actually crash. My console will only say this a few minutes after my FTB froze: [INFO] [Minecraft-Client] Stopping!

I would really appreciate it if someone could help me. I doubt that my computer is too weak for FTB monster because I ran it before with no problems, with several other programs running.
 

xWizz

New Member
Jul 29, 2019
3
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Mhm, I've changed my console from minimal to extended and now, when FTB freezes, this shows up in my console:
2014-01-16 17:41:24 [INFO] [STDERR] java.lang.NoClassDefFoundError: net/minecraft/world/CallableLvl2
2014-01-16 17:41:24 [INFO] [STDERR] at net.minecraft.world.World.func_72914_a(World.java:4420)
2014-01-16 17:41:24 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:662)
2014-01-16 17:41:24 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
2014-01-16 17:41:24 [INFO] [STDERR] at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:129)
2014-01-16 17:41:24 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
2014-01-16 17:41:24 [INFO] [STDERR] at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
2014-01-16 17:41:24 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: net.minecraft.world.CallableLvl2
2014-01-16 17:41:24 [INFO] [STDERR] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:186)
2014-01-16 17:41:24 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2014-01-16 17:41:24 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2014-01-16 17:41:24 [INFO] [STDERR] ... 6 more
2014-01-16 17:41:24 [INFO] [STDERR] Caused by: java.lang.OutOfMemoryError: PermGen space
2014-01-16 17:41:24 [SEVERE] [Minecraft-Server] Encountered an unexpected exception NoClassDefFoundError
java.lang.NoClassDefFoundError: net/minecraft/world/CallableLvl2
at net.minecraft.world.World.func_72914_a(World.java:4420)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:662)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:129)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
Caused by: java.lang.ClassNotFoundException: net.minecraft.world.CallableLvl2
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:186)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 6 more
Caused by: java.lang.OutOfMemoryError: PermGen space
I can't really understand it though.
FYI I have force updated my pack once but that didn't solve it.
 

JamiePhonic

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Jul 29, 2019
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Caused by: java.lang.OutOfMemoryError: PermGen space

update the launcher and java (latest version came out today, java 7 update 51)
 
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