function ErrorMsg()
	{
		if (!function_exists('adodb_throw')) {
			if ($this->_dbat < 0) {
				$db = false;
			}
			else {
				$db = $this->DB();
			}

			// last error could be database error too
			if ($db && $db->ErrorMsg()) {
				return $db->ErrorMsg();
			}
		}
		return $this->_lasterr;
	}