Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 5009)
+++ /CKEditor/trunk/CHANGES.html	(revision 5010)
@@ -72,4 +72,5 @@
 		<li><a href="http://dev.fckeditor.net/ticket/4762">#4762</a> : [IE] Unexpected vertical-scrolling behavior happens whenever focus is moving out of editor in source mode.</li>
 		<li><a href="http://dev.fckeditor.net/ticket/4772">#4772</a> : Fore-color style must be applied within a link instead of wrapping it.</li>
+		<li><a href="http://dev.fckeditor.net/ticket/4795">#4795</a> : [IE] Press 'Del' key on horizontal line or table result in error.</li>
 		<li>Updated the following language files:<ul>
 			<li><a href="http://dev.fckeditor.net/ticket/5006">#5006</a> : Dutch;</li>
Index: /CKEditor/trunk/_source/plugins/wysiwygarea/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/wysiwygarea/plugin.js	(revision 5009)
+++ /CKEditor/trunk/_source/plugins/wysiwygarea/plugin.js	(revision 5010)
@@ -476,18 +476,32 @@
 						if ( CKEDITOR.env.ie )
 						{
-							// Cancel default action for backspace in IE on control types. (#4047)
+							// Override keystrokes which should have deletion behavior
+							//  on control types in IE . (#4047)
 							domDocument.on( 'keydown', function( evt )
 							{
-								// Backspace.
-								var control = evt.data.getKeystroke() == 8
-											  && editor.getSelection().getSelectedElement();
-								if ( control )
-								{
-									// Make undo snapshot.
-									editor.fire( 'saveSnapshot' );
-									// Remove manually.
-									control.remove();
-									editor.fire( 'saveSnapshot' );
-									evt.cancel();
+								var keyCode = evt.data.getKeystroke();
+
+								// Backspace OR Delete.
+								if ( keyCode in { 8 : 1, 46 : 1 } )
+								{
+									var sel = editor.getSelection(),
+										control = sel.getSelectedElement();
+
+									if ( control )
+									{
+										// Make undo snapshot.
+										editor.fire( 'saveSnapshot' );
+
+										// Delete any element that 'hasLayout' (e.g. hr,table) in IE8 will
+										// break up the selection, safely manage it here. (#4795)
+										var bookmark = sel.getRanges()[ 0 ].createBookmark();
+										// Remove the control manually.
+										control.remove();
+										sel.selectBookmarks( [ bookmark ] );
+
+										editor.fire( 'saveSnapshot' );
+
+										evt.data.preventDefault();
+									}
 								}
 							} );