Sage is aware that some customers are getting a message “An error has occurred in the script on this page” when opening Sage 50. This error message will pop up each time when opening or changing a company.
Please note that the temporary workaround is to click “No” until the message goes away, and then you can work in Sage 50 normally for that session.
Sage is working diligently to resolve this issue as soon as possible and apologizes for any inconvenience this may cause.