Fatal error at manage field page

At admin/structure/types/manage/[Content-Type]/display, i receive a fatal error under some circumstances:

Notice: Undefined index: field_----- in conditional_fields_form_after_build() (line 436 of --- sites\all\modules\conditional_fields\conditional_fields.module).
Recoverable fatal error: Argument 2 passed to drupal_array_get_nested_value() must be an array, null given, called in ---\sites\all\modules\conditional_fields\conditional_fields.module on line 437 and defined in drupal_array_get_nested_value() (line 6331 of ---\includes\common.inc).

I needed to add a quick check before $dependee_info = $form['#conditional_fields'][$dependee]; , to check if this value exists, if not, continue to the next element. But not sure at all if it's a good solution.