warning: Parameter 1 to theme_imagefield_crop_widget() expected to be a reference

Hi,

I get the following warning

warning: Parameter 1 to theme_imagefield_crop_widget() expected to be a reference, value given in /.../Sites/drupal/includes/theme.inc on line 617.

When I add the image with cropping field to a Content Type and I use it.

; $Id: imagefield_crop.info,v 1.1.4.2 2009/02/06 06:01:41 yhager Exp $
name= Image crop
description = Add cropping ability to images using javascript
core = 6.x
dependencies[] = imagefield
dependencies[] = imageapi
package = CCK

; Information added by drupal.org packaging script on 2009-11-15
version = "6.x-1.0-rc1"
core = "6.x"
project = "imagefield_crop"
datestamp = "1258269036"

thanks

_{Edited by WorldFallz - moved to appropriate forum.}