big problem after migration from cck2 to cck3 ....

PHP Fatal error: Call to undefined function _content_is_empty() in sites\\all\\modules\\cck\\content.module on line 919,
PHP Stack trace:,
PHP 1. {main}() index.php:0,
PHP 2. menu_execute_active_handler() index.php:18,
PHP 3. call_user_func_array() includes\\menu.inc:348,
PHP 4. node_page_edit() includes\\menu.inc:0,
PHP 5. drupal_get_form() modules\\node\\node.pages.inc:15,
PHP 6. drupal_process_form() includes\\form.inc:121,
PHP 7. drupal_validate_form() includes\\form.inc:411,
PHP 8. _form_validate() includes\\form.inc:592,
PHP 9. form_execute_handlers() includes\\form.inc:727,
PHP 10. node_form_validate() includes\\form.inc:782,
PHP 11. node_validate() modules\\node\\node.pages.inc:65,
PHP 12. node_invoke_nodeapi() modules\\node\\node.module:815,
PHP 13. content_nodeapi() modules\\node\\node.module:679,
PHP 14. content_validate() sites\\all\\modules\\cck\\content.module:421,
PHP 15. _content_field_invoke() sites\\all\\modules\\cck\\content.module:269,
PHP 16. flexifield_field() sites\\all\\modules\\cck\\content.module:1301,
PHP 17. flexifield_items_invoke() sites\\all\\modules\\flexifield\\flexifield.module:252,
PHP 18. flexifield_item_invoke() sites\\all\\modules\\flexifield\\flexifield.module:288,
PHP 19. _flexifield_item_invoke_cck() sites\\all\\modules\\flexifield\\flexifield.module:306,
PHP 20. content_validate() sites\\all\\modules\\flexifield\\flexifield.module:376,
PHP 21. _content_field_invoke_default() sites\\all\\modules\\cck\\content.module:268,
PHP 22. content_field() sites\\all\\modules\\cck\\content.module:1334,
PHP 23. content_multiple_value_nodeapi_validate() sites\\all\\modules\\cck\\content.module:714,
PHP 24. content_set_empty() sites\\all\\modules\\cck\\includes\\content.node_form.inc:364,