Add packet information to the default packet error reporter.

ProtocolLib/src/main/java/com/comphenix/protocol/error/DetailedErrorReporter.java

@@ -95,6 +95,21 @@ public class DetailedErrorReporter implements ErrorReporter {
 		this.logger = logger;
 	}
 
+	@Override
+	public void reportMinimal(Plugin sender, String methodName, Throwable error, Object... parameters) {
+		reportMinimal(sender, methodName, error);
+		
+		// Print parameters, if they are given
+		if (parameters != null && parameters.length > 0) {
+			logger.log(Level.SEVERE, "  Parameters:");
+			
+			// Print each parameter
+			for (Object parameter : parameters) {
+				logger.log(Level.SEVERE, "    " + getStringDescription(parameter));
+			}
+		}
+	}
+	
 	@Override
 	public void reportMinimal(Plugin sender, String methodName, Throwable error) {
 		logger.log(Level.SEVERE, "[" + PLUGIN_NAME + "] Unhandled exception occured in " + methodName + " for " + 

ProtocolLib/src/main/java/com/comphenix/protocol/error/ErrorReporter.java

@@ -12,6 +12,15 @@ public interface ErrorReporter {
 	 */
 	public abstract void reportMinimal(Plugin sender, String methodName, Throwable error);
 
+	/**
+	 * Prints a small minimal error report about an exception from another plugin.
+	 * @param sender - the other plugin.
+	 * @param methodName - name of the caller method.
+	 * @param error - the exception itself.
+	 * @param parameters - any relevant parameters to print.
+	 */
+	public abstract void reportMinimal(Plugin sender, String methodName, Throwable error, Object... parameters);
+	
 	/**
 	 * Prints a warning message from the current plugin.
 	 * @param sender - the object containing the caller method. 

ProtocolLib/src/main/java/com/comphenix/protocol/injector/EntityUtilities.java

@@ -246,20 +246,23 @@ class EntityUtilities {
 	public static Entity getEntityFromID(World world, int entityID) throws FieldAccessException {
 		try {
 			Object trackerEntry = getEntityTrackerEntry(world, entityID);
-			
-			if (trackerField == null)
-				trackerField = trackerEntry.getClass().getField("tracker");
-			Object tracker = FieldUtils.readField(trackerField, trackerEntry, true);
+			Object tracker = null;
 
 			// Handle NULL cases
-			if (trackerEntry != null && tracker != null) {
-				return (Entity) MinecraftReflection.getBukkitEntity(tracker);
-			} else {
-				return null;
+			if (trackerEntry != null) {
+				if (trackerField == null)
+					trackerField = trackerEntry.getClass().getField("tracker");
+				tracker = FieldUtils.readField(trackerField, trackerEntry, true);
 			}
 			
+			// If the tracker is NULL, we'll just assume this entity doesn't exist
+			if (tracker != null)
+				return (Entity) MinecraftReflection.getBukkitEntity(tracker);
+			else
+				return null;
+			
 		} catch (Exception e) {
-			throw new FieldAccessException("Cannot find entity from ID.", e);
+			throw new FieldAccessException("Cannot find entity from ID " + entityID + ".", e);
 		}
 	}
 	

ProtocolLib/src/main/java/com/comphenix/protocol/injector/SortedPacketListenerList.java

@@ -48,7 +48,8 @@ public final class SortedPacketListenerList extends AbstractConcurrentListenerMu
 				element.getListener().onPacketReceiving(event);
 			} catch (Throwable e) {
 				// Minecraft doesn't want your Exception.
-				reporter.reportMinimal(element.getListener().getPlugin(), "onPacketReceiving()", e);
+				reporter.reportMinimal(element.getListener().getPlugin(), "onPacketReceiving(PacketEvent)", e, 
+						event.getPacket().getHandle());
 			}
 		}
 	}
@@ -69,7 +70,8 @@ public final class SortedPacketListenerList extends AbstractConcurrentListenerMu
 				element.getListener().onPacketSending(event);
 			} catch (Throwable e) {
 				// Minecraft doesn't want your Exception.
-				reporter.reportMinimal(element.getListener().getPlugin(), "onPacketSending()", e);
+				reporter.reportMinimal(element.getListener().getPlugin(), "onPacketSending(PacketEvent)", e, 
+						event.getPacket().getHandle());
 			}
 		}
 	}