--- imageapi.module	2010-02-18 13:42:00.000000000 -0500
+++ imageapi.module.new	2010-02-18 13:37:27.000000000 -0500
@@ -162,6 +162,7 @@ function imageapi_toolkit_invoke($method
   $function = $image->toolkit . '_image_' . $method;
   if (function_exists($function)) {
     array_unshift($params, $image);
+    $params[0] = &$image;
     return call_user_func_array($function, $params);
   }
   watchdog('imageapi', 'The selected image handling toolkit %toolkit can not correctly process %function.', array('%toolkit' => $image->toolkit, '%function' => $function), WATCHDOG_ERROR);