Thanks for your reply. I have the stand alone game not Steam.
All my other purchased modules are safely installed on DSC 1.5.
I am signed into my account when DSC launches.
In the modules tab the A10C isn't even showing up and in the Installed tab all my purchased games are present but no sign of A10C
I do still have DSC World 1.2 installed. Should I remove that? Or uninstall all of them and just re-install 1.5?