[11:47:43 INFO]: [MassiveCombat] Enabling MassiveCombat v2.8.19
[11:47:43 INFO]: [MassiveCombat 2.8.19] === ENABLE START ===
[11:47:43 WARN]: java.util.ConcurrentModificationException
[11:47:43 WARN]:        at java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:711)
[11:47:43 WARN]:        at java.util.LinkedHashMap$LinkedKeyIterator.next(LinkedHashMap.java:734)
[11:47:43 WARN]:        at org.bukkit.plugin.java.JavaPluginLoader.getClassByName(JavaPluginLoader.java:191)
[11:47:43 WARN]:        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:97)
[11:47:43 WARN]:        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86)
[11:47:43 WARN]:        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[11:47:43 WARN]:        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[11:47:43 WARN]:        at com.massivecraft.massivecore.store.MStore.equal(MStore.java:62)
[11:47:43 WARN]:        at com.massivecraft.massivecore.store.Coll.examineHasLocalAlterFixed(Coll.java:677)
[11:47:43 WARN]:        at com.massivecraft.massivecore.store.Coll.examineIdFixed(Coll.java:630)
[11:47:43 WARN]:        at com.massivecraft.massivecore.store.Coll.identifyLocalModificationFixed(Coll.java:849)
[11:47:43 WARN]:        at com.massivecraft.massivecore.store.Coll.identifyLocalModifications(Coll.java:840)
[11:47:43 WARN]:        at com.massivecraft.massivecore.store.ModificationPollerLocal.poll(ModificationPollerLocal.ja
va:34)
[11:47:43 WARN]:        at com.massivecraft.massivecore.store.ModificationPollerAbstract.identify(ModificationPollerA
bstract.java:61)
[11:47:43 WARN]:        at com.massivecraft.massivecore.store.ModificationPollerAbstract.run(ModificationPollerAbstra
ct.java:32)
public String getFoo()
{
    return foo;
}