Index: _source/core/editor.js
===================================================================
--- _source/core/editor.js	(revision 5330)
+++ _source/core/editor.js	(working copy)
@@ -230,6 +230,10 @@
 				// Load all plugin specific language files in a row.
 				CKEDITOR.scriptLoader.load( languageFiles, function()
 					{
+						// Add-in all other config options that been defined on CKEDITOR in plugin files.
+						// TODO: Remove this line when we're free of global config definition in all plugins. 
+						 CKEDITOR.tools.extend( editor.config, CKEDITOR.tools.clone( CKEDITOR.config ) );
+
 						// Initialize all plugins that have the "beforeInit" and "init" methods defined.
 						var methods = [ 'beforeInit', 'init', 'afterInit' ];
 						for ( var m = 0 ; m < methods.length ; m++ )
@@ -390,7 +394,7 @@
 			 * var editor = CKEDITOR.instances.editor1;
 			 * alert( <b>editor.config.theme</b> );  "default" e.g.
 			 */
-			this.config = CKEDITOR.tools.prototypedCopy( CKEDITOR.config );
+			this.config = CKEDITOR.tools.clone( CKEDITOR.config );
 
 			/**
 			 * Namespace containing UI features related to this editor instance.
@@ -505,13 +509,6 @@
 			if ( this._.filebrowserFn )
 				CKEDITOR.tools.removeFunction( this._.filebrowserFn );
 
-			items = editor.config.elementsPath_filters;
-			if ( items )
-			{
-				for ( index= 0 ; index < items.length ; index++ )
-					items[ index ] = null;
-			}
-
 			this.fire( 'destroy' );
 			CKEDITOR.remove( this );
 			CKEDITOR.fire( 'instanceDestroyed', null, this );
Index: _source/plugins/elementspath/plugin.js
===================================================================
--- _source/plugins/elementspath/plugin.js	(revision 5330)
+++ _source/plugins/elementspath/plugin.js	(working copy)
@@ -33,6 +33,11 @@
 
 		init : function( editor )
 		{
+			var config = editor.config,
+				pathFilters = config.elementsPath_filters;
+
+			config.elementsPath_filters = ( pathFilters || [] );
+
 			var spaceId = 'cke_path_' + editor.name;
 			var spaceElement;
 			var getSpaceElement = function()
@@ -56,17 +61,15 @@
 					}
 				});
 
-			var filters = editor.config.elementsPath_filters;
-
 			editor.on( 'selectionChange', function( ev )
 				{
-					var env = CKEDITOR.env;
-
-					var selection = ev.data.selection;
-
-					var element = selection.getStartElement(),
+					var env = CKEDITOR.env,
+						selection = ev.data.selection,
+						element = selection.getStartElement(),
 						html = [],
-						elementsList = this._.elementsPath.list = [];
+						editor = ev.editor,
+						elementsList = editor._.elementsPath.list = [],
+						filters = editor.config.elementsPath_filters;
 
 					while ( element )
 					{
@@ -114,9 +117,9 @@
 									( ( CKEDITOR.env.gecko && CKEDITOR.env.version < 10900 ) ?
 									' onfocus="event.preventBubble();"' : '' ) +
 									' hidefocus="true" ' +
-									' onkeydown="return CKEDITOR._.elementsPath.keydown(\'', this.name, '\',', index, ', event);"' +
+									' onkeydown="return CKEDITOR._.elementsPath.keydown(\'', editor.name, '\',', index, ', event);"' +
 									extra ,
-									' onclick="return CKEDITOR._.elementsPath.click(\'', this.name, '\',', index, ');"',
+									' onclick="return CKEDITOR._.elementsPath.click(\'', editor.name, '\',', index, ');"',
 									' role="button" aria-labelledby="' + idBase + index + '_label">',
 										name,
 										'<span id="', idBase, index, '_label" class="cke_label">' + label + '</span>',
@@ -206,8 +209,9 @@
 
 /**
  * A list of filter functions to determinate whether an element should display in elements path bar.
+ * @name CKEDITOR.config.elementsPath_filters
  * @type Array Array of functions that optionaly return 'false' to prevent the element from displaying.
- * @default  []
+ * @default []
  * @example
  *	// Prevent elements with attribute 'myAttribute' to appear in elements path.
  *	editor.config.elementsPath_filters.push( function( element )
@@ -216,4 +220,3 @@
  *			return false;
  *	});
  */
-CKEDITOR.config.elementsPath_filters = [];