Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, 'user_detail

Love the idea of this module, but I seem to be getting the following warning message when I install:

Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, 'user_details_help_form' was given in drupal_retrieve_form() (line 787 of /home/asiascen/public_html/hkscene.com/includes/form.inc).

Any idea what could be causing this?