Problem Server crashes with Mindcrack 8.1.1

[mainsheep]

Ever since I updated to MC 8.1.1 yesterday, the server keeps crashing randomly and I have to do a map rollback to be rid of the problem.

My server is running from Ubuntu Server 12.04 with Oracle Java 7. It's a Core i5 3.2ghz with 32GB RAM.

I'm running MCPC+ with the latest recommended version (build 199). I'm running the following plugins:

• AutoMessage
• Buycraft
• ChatManager
• Enjin Minecraft Plugin
• Essentials
• GAListener
• GriefPrevention
• Hawkeye
• LagMeter
• MineBackup
• Modifyworld
• PermissionsEx
• PluginMetrics
• Tekkit Customizer (for banning items)
• Votifier
• WorldBorder
• WorldEdit

The crash message is as follows:
2013-02-20 07:42:59 [SEVERE] java.lang.NoClassDefFoundError: l
2013-02-20 07:42:59 [SEVERE]at a.<init>(CrashReport.java:27)
2013-02-20 07:42:59 [SEVERE]at a.a(CrashReport.java:320)
2013-02-20 07:42:59 [SEVERE]at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:960)
2013-02-20 07:42:59 [SEVERE]at ho.r(DedicatedServer.java:309)
2013-02-20 07:42:59 [SEVERE]at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:857)
2013-02-20 07:42:59 [SEVERE]at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:744)
2013-02-20 07:42:59 [SEVERE]at fy.run(ThreadMinecraftServer.java:16)
2013-02-20 07:42:59 [SEVERE] Encountered an unexpected exception NoClassDefFoundError
java.lang.NoClassDefFoundError: l
at a.<init>(CrashReport.java:27)
at a.a(CrashReport.java:320)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:960)
at ho.r(DedicatedServer.java:309)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:857)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:744)
at fy.run(ThreadMinecraftServer.java:16)


Does anyone have any clue as why this happens? The server just stops responding, and I have to kill the process running java, then do a complete map rollback.
This has happened 3 times now, and I'm starting to get desperate. Any help in this matter is appreciated.

 

[Geoff]

We tried to upgrade to 8.1.0 MindCrack from 8.0.1 + Logistics Pipes with TickThreading and in the end we had to rollback to a backup and go back to 8.0.1 after the world started having severe chunk errors. Without TickThreading we would peg one of the cores pretty quick and cause lag. Either way it was a non-starter. Putting in place an upgrade server to test before moving users from the previous version. This has been a real issue on upgrades impacting the users.