OK, it seems the problem is with the install files for the latest version of Paypal IPN, I re-installed Joomla V3.3 and installed the Paypal IPN for Joomla 3.3 then upgarde Joomla and Paypal IPN and now it works, it appears that the latest installer does not add docmanpaypalconfig where name = 'live_site' limit 1 to the mysql database and this is the cause of the problem, having purchased this component again only to find it didn't work I expect that you will refund the extra payment had to make in order to try and rectify my problem?