CONSOLE OUTPUT LOG. PERSONAL INFORMATION SUCH AS USERNAMES REMOVED. [user@computer ~]$ java -Xmx4096M -Xms1024M -jar minecraft.jar asdf 229 recipes 27 achievements 2013-05-09 12:24:01 [CLIENT] [INFO] Setting user: name (Session ID is xx300xxxxx07063) 2013-05-09 12:24:02 [CLIENT] [INFO] LWJGL Version: 2.9.0 Starting up SoundSystem... Initializing LWJGL OpenAL (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org) OpenAL initialized. 2013-05-09 12:24:03 [CLIENT] [INFO] Found animation info for: textures/blocks/lava_flow.txt 2013-05-09 12:24:03 [CLIENT] [INFO] Found animation info for: textures/blocks/water_flow.txt 2013-05-09 12:24:03 [CLIENT] [INFO] Found animation info for: textures/blocks/fire_0.txt 2013-05-09 12:24:03 [CLIENT] [INFO] Found animation info for: textures/blocks/fire_1.txt 2013-05-09 12:24:03 [CLIENT] [INFO] Found animation info for: textures/blocks/lava.txt 2013-05-09 12:24:03 [CLIENT] [INFO] Found animation info for: textures/blocks/portal.txt 2013-05-09 12:24:03 [CLIENT] [INFO] Found animation info for: textures/blocks/water.txt 2013-05-09 12:24:03 [CLIENT] [INFO] Found animation info for: textures/items/clock.txt 2013-05-09 12:24:03 [CLIENT] [INFO] Found animation info for: textures/items/compass.txt java.io.FileNotFoundException: http://assets.minecraft.net/1_6_has_been_released.flag at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1623) at kn.a(SourceFile:234) at bkg.run(SourceFile:113) at java.lang.Thread.run(Thread.java:722) 2013-05-09 12:24:08 [SERVER] [INFO] Starting integrated minecraft server version 1.5.2 2013-05-09 12:24:08 [SERVER] [INFO] Generating keypair 2013-05-09 12:24:08 [SERVER] [INFO] Converting map! 2013-05-09 12:24:08 [SERVER] [INFO] Scanning folders... 2013-05-09 12:24:08 [SERVER] [INFO] Total conversion count is 4 java.io.FileNotFoundException: http://assets.minecraft.net/1_6_has_been_released.flag at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1623) at kn.a(SourceFile:234) at bkg.run(SourceFile:113) at java.lang.Thread.run(Thread.java:722) u: Reading NBT data at bs.f(SourceFile:136) at ace.a(SourceFile:30) at ajq.a(SourceFile:215) at ajq.a(SourceFile:186) at ajq.a(SourceFile:145) at net.minecraft.server.MinecraftServer.b(SourceFile:112) at bjg.a(SourceFile:59) at bjg.c(SourceFile:104) at net.minecraft.server.MinecraftServer.run(SourceFile:306) at gp.run(SourceFile:573) Caused by: java.lang.ClassCastException: bz cannot be cast to cb at bs.f(SourceFile:134) ... 9 more 2013-05-09 12:24:08 [SERVER] [SEVERE] Encountered an unexpected exception u u: Reading NBT data at bs.f(SourceFile:136) at ace.a(SourceFile:30) at ajq.a(SourceFile:215) at ajq.a(SourceFile:186) at ajq.a(SourceFile:145) at net.minecraft.server.MinecraftServer.b(SourceFile:112) at bjg.a(SourceFile:59) at bjg.c(SourceFile:104) at net.minecraft.server.MinecraftServer.run(SourceFile:306) at gp.run(SourceFile:573) Caused by: java.lang.ClassCastException: bz cannot be cast to cb at bs.f(SourceFile:134) ... 9 more 2013-05-09 12:24:08 [SERVER] [SEVERE] This crash report has been saved to: /home/username/.minecraft/crash-reports/crash-filename.txt 2013-05-09 12:24:08 [SERVER] [INFO] Stopping server 2013-05-09 12:24:08 [SERVER] [INFO] Saving players 2013-05-09 12:24:08 [SERVER] [INFO] Saving worlds java.lang.NullPointerException at net.minecraft.server.MinecraftServer.a(SourceFile:252) at net.minecraft.server.MinecraftServer.k(SourceFile:276) at bjg.k(SourceFile:229) at net.minecraft.server.MinecraftServer.run(SourceFile:364) at gp.run(SourceFile:573) ^CAL lib: (EE) alc_cleanup: 1 device not closed