Board Thread:Modded Server Technical Support/@comment-26878735-20170226210717/@comment-82.232.39.159-20170226234441

Here are some comments and suggestions from your logfile:

Description: Exception in server tick loop

Usually some plugin or command taking too much time to execute.

java.lang.ArrayIndexOutOfBoundsException: -1

But here a software bug in one of your plugins, I think

KCauldron Version: pw.prok:KCauldron:1.7.10-1614.201 Official

I use version 152. You can also try Thermos, a successor of KCauldron.

Plugins: WorldEdit, TimTheEnchanter, Advanced_Item_Effects, Essentials, GroupManager, EssentialsChat, ClearLag, Chairs, Vault, EssentialsSpawn, Simple_Suffix, WorldGuard, SimpleRename, CustomEnchantments

I suggest testing with a smaller set of plugins to find the culprit.

WorldEdit, Advance_Item_Effects, Essentials, Vault are safe. I use them too.

'''Java Version: 1.8.0_72, Oracle Corporation '''

You should use Update 121 for security reasons.

'''Memory: 549897296 bytes (524 MB) / 1561321472 bytes (1488 MB) up to 31136546816 bytes (29694 MB) '''

You have more than enough RAM available.

'''JVM Flags: 21 total; -Xms512M -XX:PermSize=384m -XX:MaxPermSize=768m -XX:-UseConcMarkSweepGC -XX:+UseParNewGC -XX:+UseNUMA -XX:+CMSParallelRemarkEnabled -XX:+UseAdaptiveGCBoundary -XX:-UseGCOverheadLimit -XX:+UseBiasedLocking -XX:SurvivorRatio=8 -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=15 -XX:UseSSE=3 -XX:+UseLargePages -XX:+UseFastAccessorMethods -XX:+UseStringCache -XX:+UseCompressedOops -XX:+OptimizeStringConcat -XX:+AggressiveOpts -XX:ParallelGCThreads=1 '''

You should test with far simpler settings. This may cause issues.

Player Count: 6 / 777

You can safely lower the maximum number of players. Using a high number will only result in unnecessary memoy consumption.