I had the same problem. My operating system is Ubuntu 16.04, and my OCS server is 2.5. I try to install officepack by browser but at the end of installation, the server inform a error, but the error field was "blank". I found this topic, and I verify that conf and map files doesn't exist in my server. I follow the instructions of this topic and put this files in my server. I restart apache, force a windows with office inventory, and nothing. Zero office keys. At this moment I have 26 machines in my inventory, 90% windows with office, but no office keys in OCS. Any ideas? Tks!
EDIT: I use again the "agent deploy" using "/UPGRADE" and now the office keys coming! Tks for the tip about map and config files!!