Problems with your sql statement.

SELECT account.nameth, account.nameen, account_info.name_url, pd46.projectgroup FROM account_info, account WHERE (account.acc_id = account_info.acc_id AND account_info.acc_id = pd46.account AND pd46.crkp_id='1450084' AND pd46.account > '0' AND account_info.name_url <> '')

Unknown column 'pd46.projectgroup' in 'field list'