XF 1.5 Выходит ошибка при импортировании форума

[Руслан Белых]

Помогите пожалуйста

Server Error

Mysqli statement execute error : Duplicate entry '85' for key 'PRIMARY'


    Zend_Db_Statement_Mysqli->_execute() in C:\OpenServer\domains\1.ru\library\Zend\Db\Statement.php at line 297
    Zend_Db_Statement->execute() in C:\OpenServer\domains\1.ru\library\Zend\Db\Adapter\Abstract.php at line 479
    Zend_Db_Adapter_Abstract->query() in C:\OpenServer\domains\1.ru\library\Zend\Db\Adapter\Abstract.php at line 574
    Zend_Db_Adapter_Abstract->insert() in C:\OpenServer\domains\1.ru\library\XenForo\DataWriter.php at line 1638
    XenForo_DataWriter->_insert() in C:\OpenServer\domains\1.ru\library\XenForo\DataWriter.php at line 1627
    XenForo_DataWriter->_save() in C:\OpenServer\domains\1.ru\library\XenForo\DataWriter.php at line 1419
    XenForo_DataWriter->save() in C:\OpenServer\domains\1.ru\library\XenForo\Model\Import.php at line 617
    XenForo_Model_Import->_importData() in C:\OpenServer\domains\1.ru\library\XenForo\Model\Import.php at line 1287
    XenForo_Model_Import->importCategory() in C:\OpenServer\domains\1.ru\library\XenForo\Importer\XenForo.php at line 1396
    XenForo_Importer_XenForo->_importNodeTree() in C:\OpenServer\domains\1.ru\library\XenForo\Importer\XenForo.php at line 1276
    XenForo_Importer_XenForo->stepNodes() in C:\OpenServer\domains\1.ru\library\XenForo\Importer\Abstract.php at line 124
    XenForo_Importer_Abstract->runStep() in C:\OpenServer\domains\1.ru\library\XenForo\ControllerAdmin\Import.php at line 189
    XenForo_ControllerAdmin_Import->_runStep() in C:\OpenServer\domains\1.ru\library\XenForo\ControllerAdmin\Import.php at line 241
    XenForo_ControllerAdmin_Import->_startStep() in C:\OpenServer\domains\1.ru\library\XenForo\ControllerAdmin\Import.php at line 184
    XenForo_ControllerAdmin_Import->actionStartStep() in C:\OpenServer\domains\1.ru\library\XenForo\FrontController.php at line 369
    XenForo_FrontController->dispatch() in C:\OpenServer\domains\1.ru\library\XenForo\FrontController.php at line 152
    XenForo_FrontController->run() in C:\OpenServer\domains\1.ru\admin.php at line 13