Hi, Is this a new install or you uninstalled the previous version before this install?

This is a new install, but there was the same version installed previously which I uninstalled.

I cannot uninstall the print server, as its uninstall jar is broken. I have to uninstall it manually. 

According to the image supplied the correct name that should be used is ADX_APP

These are Data Sources I added manually myself. The list was initially empty. I saw a suggestion online where someone said the name should be ADX_*SOLUTION NAME*. Essentially, all those entries were the ones I added manually.

It's not about the naming conversion but configuration of pointing to your database

Which configuration? Where can I update that information? In the XML somewhere? If In the Data Source, it points to the correct DB - all sources there test successfully.

cyberion1985 Log this issue on https://app.smartsheet.com/b/form/4c5023eeaff24b05839f55753b05c465 an agent will assist.

I solved this by checking in the folder the Print Server installation extracts, and installing some of the installation files found within: