64bit/32bit Server Login Crash

[Bubbles14white2]

Title: 64bit/32bit Server Login Crash

Version: 3.1.2

OS: Windows 7 home premium, 64Bit

Java Version: 1.7.0_45

Description of Problem:

I load up Tekkit Classic, Log onto a server I've been playing on, Then the screen reverts to the default Dirt Block background of the World Select/Server Select menu, And I get a small output in console, Along with a loonnnggg Output into an error log at the end of the latest log File. I open it up, And it continuously says "Out of memory" at the end of an attempt to load something. I've set it to the max memory (1gb), Yet my system is 64 bit, Meaning I should be able to allocate more memory for it (I think.) If I am wrong, Please state so. Keep in mind said error log repeats several hundred times over.

Error Messages:

java.lang.ClassCastException: un cannot be cast to yw

at adl.a(NetClientHandler.java:594)

at kc.a(SourceFile:38)

at lg.b(NetworkManager.java:343)

at adl.b(NetClientHandler.java:71)

at je.c(SourceFile:50)

at net.minecraft.client.Minecraft.k(Minecraft.java:1877)

at net.minecraft.client.Minecraft.x(Minecraft.java:825)

at net.minecraft.client.Minecraft.run(Minecraft.java:753)

at java.lang.Thread.run(Unknown Source)

2013-12-15 20:08:10 [sEVERE] A critical error has occurred.

java.lang.ClassCastException: un cannot be cast to yw

at adl.a(NetClientHandler.java:594)

at kc.a(SourceFile:38)

at lg.b(NetworkManager.java:343)

at adl.b(NetClientHandler.java:71)

at je.c(SourceFile:50)

at net.minecraft.client.Minecraft.k(Minecraft.java:1877)

at net.minecraft.client.Minecraft.x(Minecraft.java:825)

at net.minecraft.client.Minecraft.run(Minecraft.java:753)

at java.lang.Thread.run(Unknown Source)

2013-12-15 20:08:10 [sEVERE] 41 mods loaded

Error Log:

[Minecraft-Client] ########## GL ERROR ##########

2013/12/12 20:05:36 [iNFO]  2013-12-12 20:05:36 [sEVERE] [Minecraft-Client] @ Post render

2013/12/12 20:05:36 [iNFO]  2013-12-12 20:05:36 [sEVERE] [Minecraft-Client] 1285: Out of memory

2013/12/12 20:05:38 [iNFO]  2013-12-12 20:05:38 [sEVERE] [Minecraft-Client] ########## GL ERROR ##########

2013/12/12 20:05:38 [iNFO]  2013-12-12 20:05:38 [sEVERE] [Minecraft-Client] @ Post render

2013/12/12 20:05:38 [iNFO]  2013-12-12 20:05:38 [sEVERE] [Minecraft-Client] 1285: Out of memory

2013/12/12 20:05:39 [iNFO]  2013-12-12 20:05:39 [sEVERE] [Minecraft-Client] ########## GL ERROR ##########

2013/12/12 20:05:39 [iNFO]  2013-12-12 20:05:39 [sEVERE] [Minecraft-Client] @ Post render

2013/12/12 20:05:39 [iNFO]  2013-12-12 20:05:39 [sEVERE] [Minecraft-Client] 1285: Out of memory

2013/12/12 20:05:41 [iNFO]  2013-12-12 20:05:41 [sEVERE] [Minecraft-Client] ########## GL ERROR ##########

2013/12/12 20:05:41 [iNFO]  2013-12-12 20:05:41 [sEVERE] [Minecraft-Client] @ Post render

2013/12/12 20:05:41 [iNFO]  2013-12-12 20:05:41 [sEVERE] [Minecraft-Client] 1285: Out of memory

2013/12/12 20:05:43 [iNFO]

[rcmaehl]

Are you using 64-bit java? (You have to manually install this instead of 32-bit java)