Index: modules/content_profile_registration.module
===================================================================
--- modules/content_profile_registration.module	(revision 2873)
+++ modules/content_profile_registration.module	(working copy)
@@ -56,6 +56,16 @@
 
 function content_profile_registration_admin_form_submit($form, &$form_state) {
   $form_state['values']['registration_hide'] = array_keys(array_filter($form_state['values']['registration_hide']));
+    if (module_exists('content_permissions')) {
+        $fields = array_keys(_content_profile_registration_get_fields( $form_state['type']));
+        $account = user_load(0);
+        foreach ($fields as $key=>$field) {
+            if (!in_array($field,$form_state['values']['registration_hide']) && !user_access('edit ' . $field,$account)) {
+                drupal_set_message('Warning, please give anonymous user edit permission for field '.$field,'error');
+            }
+        }
+    }
+  
 }
 
 /**