Hi 

If you are installing 2019.2 update, make sure you run the update on server as well, as there is a connection manager update. 

can not give much suggestion as information you provide is limited, I would suggest you can test install full version on server test see if sample opens and see if file works locally.

If sample opens but not local data, then could be data issue, might have to go backup

if file works locally but not across network , then you might have network issue.

if you still have issue, I would suggest you call Sage 50 CA Support 1 800 522 2722.