Since 3.1.2, can't start server. NoClassDefFoundError

[barb]

Since downloading the new server files, it will not run. Nothing has changed on this computer, and I have 3.0.4 working fine. Computer is Windows XP x64 Edition (SP2) with 4gb RAM, the only installed Java version is JRE7 u6 x64. Others seem to be having this problem, anyone know how to fix it? Thanks.

C:Documents and SettingsAdministratorDesktopTekkit_Server_3.1ghfvu.2>java -X

mx3G -Xms2G -jar Tekkit.jar

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java.lang.NoClassDefFoundError: Could not initialize class org.fusesource.jansi.

internal.Kernel32

at org.fusesource.jansi.internal.WindowsSupport.getConsoleMode(WindowsSu

pport.java:50)

at jline.WindowsTerminal.getConsoleMode(WindowsTerminal.java:176)

at jline.WindowsTerminal.init(WindowsTerminal.java:80)

at jline.TerminalFactory.create(TerminalFactory.java:93)

at jline.TerminalFactory.get(TerminalFactory.java:151)

at jline.console.ConsoleReader.<init>(ConsoleReader.java:140)

at jline.console.ConsoleReader.<init>(ConsoleReader.java:126)

at net.minecraft.server.MinecraftServer.<init>(MinecraftServer.java:101)

at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:637)

at org.bukkit.craftbukkit.Main.main(Main.java:136)

C:Documents and SettingsAdministratorDesktopTekkit_Server_3.1ghfvu.2>pause

Press any key to continue . . .