Index: thickbox.module
===================================================================
--- thickbox.module	(revision 2280)
+++ thickbox.module	(working copy)
@@ -177,7 +177,7 @@
     $file = _imagefield_file_load($item['fid']);
     if (strpos($formatter, 'thickbox][') !== false) {
       list($null, $namespace) = explode('][', $formatter, 2);
-      $rules = _imagecache_get_presets();
+      $rules = imagecache_presets();
       if (in_array($namespace, (array) $rules)) {
         return theme('imagefield_image_imagecache_thickbox', $namespace, $field, $file['filepath'], $item['alt'], $item['title']);
       }