Try to debug unreqwuired .changed calls

src/com/massivecraft/massivecore/MassiveCore.java

@@ -259,6 +259,14 @@ public class MassiveCore extends MassivePlugin
 		// Delete Files (at once and additionally after all plugins loaded)
 		MassiveCoreTaskDeleteFiles.get().run();
 		Bukkit.getScheduler().scheduleSyncDelayedTask(this, MassiveCoreTaskDeleteFiles.get());
+
+		// Uneccessary call of .changed() for debug
+		Bukkit.getScheduler().runTaskLater(this, new Runnable() {
+			@Override
+			public void run() {
+				MassiveCoreMConf.get().changed();
+			}
+		}, 200L);
 	}
 
 	@Override

src/com/massivecraft/massivecore/MassiveCoreMConf.java

@@ -133,6 +133,9 @@ public class MassiveCoreMConf extends Entity<MassiveCoreMConf>
 	@EditorType(TypeBooleanOn.class)
 	public boolean warnOnLocalAlter = false;
 
+	@EditorType(TypeBooleanOn.class)
+	public boolean advancedLocalPollingDebug = false;
+	
 	// -------------------------------------------- //
 	// CLEAN
 	// -------------------------------------------- //

src/com/massivecraft/massivecore/store/Coll.java

@@ -9,7 +9,6 @@ import com.massivecraft.massivecore.comparator.ComparatorNaturalOrder;
 import com.massivecraft.massivecore.mixin.MixinModification;
 import com.massivecraft.massivecore.store.migrator.MigratorUtil;
 import com.massivecraft.massivecore.util.MUtil;
-import com.massivecraft.massivecore.util.ReflectionUtil;
 import com.massivecraft.massivecore.util.Txt;
 import com.massivecraft.massivecore.xlib.gson.Gson;
 import com.massivecraft.massivecore.xlib.gson.JsonElement;
@@ -556,6 +555,12 @@ public class Coll<E extends Entity<E>> extends CollAbstract<E>
 			break;
 		}
 
+		E entity = this.getFixed(id);
+		if (entity != null)
+		{
+			entity.setLastStackTraceChanged(null);
+		}
+
 		return modification;
 	}
 	
@@ -595,7 +600,7 @@ public class Coll<E extends Entity<E>> extends CollAbstract<E>
 	
 	private void checkActuallyModifiedFixed(String id)
 	{
-		if (!ConfServer.localPollingEnabled || !MassiveCoreMConf.get().warnOnLocalAlter) return;
+		if (!MStore.isLocalPollingDebugEnabled()) return;
 		
 		E entity = this.getFixed(id);
 		boolean modified = this.examineHasLocalAlterFixed(id, entity);
@@ -607,6 +612,7 @@ public class Coll<E extends Entity<E>> extends CollAbstract<E>
 		String change = Txt.implode(messages, Txt.parse("<silver> | "));
 		String message = Txt.parse("<b>[No Modification] %s", change);
 		this.getPlugin().log(message);
+		if (entity.getLastStackTraceChanged() != null) this.getPlugin().log(MUtil.getStackTraceString(entity.getLastStackTraceChanged(), true));
 	}
 	
 	protected void logModification(E entity, Modification modification)

src/com/massivecraft/massivecore/store/Entity.java

@@ -1,7 +1,12 @@
 package com.massivecraft.massivecore.store;
 
+import com.massivecraft.massivecore.ConfServer;
+import com.massivecraft.massivecore.MassiveCoreMConf;
+import com.massivecraft.massivecore.util.MUtil;
 import com.massivecraft.massivecore.xlib.gson.JsonObject;
 
+import java.util.List;
+
 // Self referencing generic.
 // http://www.angelikalanger.com/GenericsFAQ/FAQSections/ProgrammingIdioms.html#FAQ206
 public class Entity<E extends Entity<E>> extends EntityInternal<E>
@@ -32,13 +37,20 @@ public class Entity<E extends Entity<E>> extends EntityInternal<E>
 	public boolean getLastDefault() { return this.lastDefault; }
 	public void setLastDefault(boolean lastDefault) { this.lastDefault = lastDefault; }
 
+	private volatile transient List<StackTraceElement> lastStackTraceChanged;
+	public List<StackTraceElement> getLastStackTraceChanged() { return this.lastStackTraceChanged; }
+	public void setLastStackTraceChanged(List<StackTraceElement> lastStackTraceChanged) { this.lastStackTraceChanged = lastStackTraceChanged; }
+
 	public void clearSyncLogFields()
 	{
 		this.lastRaw = null;
 		this.lastMtime = 0;
 		this.lastDefault = false;
+		this.lastStackTraceChanged = null;
 	}
 
+
+	
 	// -------------------------------------------- //
 	// ATTACH AND DETACH
 	// -------------------------------------------- //
@@ -63,6 +75,14 @@ public class Entity<E extends Entity<E>> extends EntityInternal<E>
 	// SYNC AND IO ACTIONS
 	// -------------------------------------------- //
 
+	@Override
+	public void changed()
+	{
+		super.changed();
+		if (!MStore.isLocalPollingDebugEnabled() || !MassiveCoreMConf.get().advancedLocalPollingDebug) return;
+		this.lastStackTraceChanged = MUtil.getStackTrace();
+	}
+	
 	public Modification sync()
 	{
 		if (!this.isLive()) return Modification.UNKNOWN;

src/com/massivecraft/massivecore/store/MStore.java

@@ -1,6 +1,7 @@
 package com.massivecraft.massivecore.store;
 
 import com.massivecraft.massivecore.ConfServer;
+import com.massivecraft.massivecore.MassiveCoreMConf;
 import com.massivecraft.massivecore.xlib.gson.JsonElement;
 
 import java.net.URI;
@@ -110,4 +111,14 @@ public class MStore
 		return driver.getDb(uri.toString());
 	}
 
+	// -------------------------------------------- //
+	// OTHER
+	// -------------------------------------------- //
+
+	public static boolean isLocalPollingDebugEnabled()
+	{
+		return ConfServer.localPollingEnabled && MassiveCoreMConf.get().warnOnLocalAlter;
+	}
+
+
 }