java -Xmx1024m -Xms1024m -jar minecraft_server.jar nogui | pastebinit
2011-03-15 02:36:41 [INFO] Starting minecraft server version Beta 1.3
2011-03-15 02:36:41 [INFO] Loading properties
2011-03-15 02:36:41 [INFO] Starting Minecraft server on *:25565
2011-03-15 02:36:41 [INFO] Preparing level "world"
2011-03-15 02:36:41 [INFO] Preparing start region
java.io.FileNotFoundException: ./world/session.lock (No such file or directory)
        at java.io.FileOutputStream.open(Native Method)
        at java.io.FileOutputStream.<init>(FileOutputStream.java:209)
        at java.io.FileOutputStream.<init>(FileOutputStream.java:160)
        at cw.f(SourceFile:37)
        at cw.<init>(SourceFile:31)
        at gy.<init>(SourceFile:17)
        at net.minecraft.server.MinecraftServer.a(SourceFile:169)
        at net.minecraft.server.MinecraftServer.d(SourceFile:134)
        at net.minecraft.server.MinecraftServer.run(SourceFile:237)
        at bc.run(SourceFile:366)
java.lang.RuntimeException: Failed to check session lock, aborting
        at cw.f(SourceFile:45)
        at cw.<init>(SourceFile:31)
        at gy.<init>(SourceFile:17)
        at net.minecraft.server.MinecraftServer.a(SourceFile:169)
        at net.minecraft.server.MinecraftServer.d(SourceFile:134)
        at net.minecraft.server.MinecraftServer.run(SourceFile:237)
        at bc.run(SourceFile:366)
2011-03-15 02:36:41 [SEVERE] Unexpected exception
java.lang.RuntimeException: Failed to check session lock, aborting
        at cw.f(SourceFile:45)
        at cw.<init>(SourceFile:31)
        at gy.<init>(SourceFile:17)
        at net.minecraft.server.MinecraftServer.a(SourceFile:169)
        at net.minecraft.server.MinecraftServer.d(SourceFile:134)
        at net.minecraft.server.MinecraftServer.run(SourceFile:237)
        at bc.run(SourceFile:366)
You are trying to send an empty document, exiting.
digi-geek@vdserv:~/minecraft/server$