Index: trunk/admin/category/category_maint.php
===================================================================
diff -u -r2536 -r2611
--- trunk/admin/category/category_maint.php	(.../category_maint.php)	(revision 2536)
+++ trunk/admin/category/category_maint.php	(.../category_maint.php)	(revision 2611)
@@ -26,6 +26,7 @@
     	$p = $path.$pathchar;
 
     	// Start looking for the root flag file
+    	if( !isset($pathtoroot) ) $pathtoroot = '';
     	while( !strlen($pathtoroot) && strlen($p) )
     	{
       		$sub = substr($p, strlen($pathchar) * -1);