When creating a deployment for Fabrication CADmep 2016, Fabrication ESTmep 2016 and Fabrication CAMduct 2016 I received the error "The copy functions cannot be used".
Which typically means we have a permissions problem or a bad download sometimes. Not this time. This time the problem is with the setup.ini file itself!
You can manually fix the ini files, save them and it should create the deployment just fine. However, I didn't take any chances, Autodesk has a kb article with each of the 2016 setup.ini files attached that you could download. I downloaded the CADmep ini file and tested. It Worked!
Copied the other 2 and created the deployments without a hitch.
Here's the Autodesk kb article:
I created a backup of the original before pasting the fixed version in.