error writing the webskin list

On Quick Builder wheh selecting the content type the webskin often doesn't display with the error: Uncaught TypeError: Cannot read property 'ownerDocument' of undefined

webskin/dmNavigation/webtopBodyQuickBuilder.cfm

@@ -273,6 +273,7 @@ $out:$
 						   data: { typename: $j('##makehtml').val() },
 						   cache: false,
 						   timeout: 10000,
+						   dataType:'html',
 						   success: function(msg){
 								$j('##displayMethods').html(msg);			     	
 						   }
@@ -361,4 +362,4 @@ $out:$
 </sec:CheckPermission>
 
 
-<cfsetting enablecfoutputonly="false">
+<cfsetting enablecfoutputonly="false">