Are you struggling to start Sage 50 on your computer? Did you a message on Sage with error code 8591? This is a system error that implies that Pervasive has stopped working. This is most likely caused because of a damaged Pervasive installation or because your firewall settings are blocking the Sage software from running smoothly. One of the best ways to resolve this error is to simply uninstall and reinstall Pervasive. You can call the Sage customer support number to know the exact steps that need to be followed to install Pervasive. Read More:- https://www.accounting-online-software.com/sage-support-number.php