I'm sure many other people are having trouble with this as well, but the 1.6.4 packs are launching but not letting me create a new world. This is the error i'm getting.
2013-12-28 14:39:11 [INFO] [Minecraft-Server] Starting integrated minecraft server version 1.6.4
2013-12-28 14:39:11 [INFO] [Minecraft-Server] Generating keypair
2013-12-28 14:39:11 [INFO] [STDERR] java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
2013-12-28 14:39:11 [INFO] [STDERR] at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:105)
2013-12-28 14:39:11 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
2013-12-28 14:39:11 [INFO] [STDERR] at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
2013-12-28 14:39:11 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: org.bouncycastle.jce.provider.BouncyCastleProvider
2013-12-28 14:39:11 [INFO] [STDERR] at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
2013-12-28 14:39:11 [INFO] [STDERR] at java.security.AccessController.doPrivileged(Native Method)
2013-12-28 14:39:11 [INFO] [STDERR] at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
2013-12-28 14:39:11 [INFO] [STDERR] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:113)
2013-12-28 14:39:11 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
2013-12-28 14:39:11 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
2013-12-28 14:39:11 [INFO] [STDERR] ... 3 more
2013-12-28 14:39:11 [SEVERE] [Minecraft-Server] Encountered an unexpected exception NoClassDefFoundError
java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:105)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
Caused by: java.lang.ClassNotFoundException: org.bouncycastle.jce.provider.BouncyCastleProvider
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:113)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 3 more
2013-12-28 14:39:11 [SEVERE] [Minecraft-Server] This crash report has been saved to: /Applications/Direwolf20_1_6_4/minecraft/crash-reports/crash-2013-12-28_14.39.11-server.txt
2013-12-28 14:39:11 [INFO] [Minecraft-Server] Stopping server
2013-12-28 14:39:11 [INFO] [Minecraft-Server] Saving players
2013-12-28 14:39:11 [INFO] [Minecraft-Server] Saving worlds
2013-12-28 14:39:11 [INFO] [ForgeModLoader] The state engine was in incorrect state SERVER_ABOUT_TO_START and forced into state SERVER_STOPPED. Errors may have been discarded.
2013-12-28 14:39:11 [INFO] [Minecraft-Server] Generating keypair
2013-12-28 14:39:11 [INFO] [STDERR] java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
2013-12-28 14:39:11 [INFO] [STDERR] at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:105)
2013-12-28 14:39:11 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
2013-12-28 14:39:11 [INFO] [STDERR] at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
2013-12-28 14:39:11 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: org.bouncycastle.jce.provider.BouncyCastleProvider
2013-12-28 14:39:11 [INFO] [STDERR] at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
2013-12-28 14:39:11 [INFO] [STDERR] at java.security.AccessController.doPrivileged(Native Method)
2013-12-28 14:39:11 [INFO] [STDERR] at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
2013-12-28 14:39:11 [INFO] [STDERR] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:113)
2013-12-28 14:39:11 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
2013-12-28 14:39:11 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
2013-12-28 14:39:11 [INFO] [STDERR] ... 3 more
2013-12-28 14:39:11 [SEVERE] [Minecraft-Server] Encountered an unexpected exception NoClassDefFoundError
java.lang.NoClassDefFoundError: org/bouncycastle/jce/provider/BouncyCastleProvider
at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:105)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
Caused by: java.lang.ClassNotFoundException: org.bouncycastle.jce.provider.BouncyCastleProvider
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:113)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 3 more
2013-12-28 14:39:11 [SEVERE] [Minecraft-Server] This crash report has been saved to: /Applications/Direwolf20_1_6_4/minecraft/crash-reports/crash-2013-12-28_14.39.11-server.txt
2013-12-28 14:39:11 [INFO] [Minecraft-Server] Stopping server
2013-12-28 14:39:11 [INFO] [Minecraft-Server] Saving players
2013-12-28 14:39:11 [INFO] [Minecraft-Server] Saving worlds
2013-12-28 14:39:11 [INFO] [ForgeModLoader] The state engine was in incorrect state SERVER_ABOUT_TO_START and forced into state SERVER_STOPPED. Errors may have been discarded.
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