Index: lib/ezfile/classes/ezdir.php
===================================================================
--- lib/ezfile/classes/ezdir.php	(revision 24327)
+++ lib/ezfile/classes/ezdir.php	(working copy)
@@ -266,7 +266,8 @@
              !$hasEndSeparator )
             $path .= $separator;
         else if ( !$includeEndSeparator and
-                  $hasEndSeparator )
+                  $hasEndSeparator and
+                  $pathLen > 1 )
             $path = substr( $path, 0, $pathLen - 1 );
         return $path;
     }