Applications that are distributed through the Mac App store have
to run in a sandbox environment. This means that DataGraph can only access files
in your home directory that you select in an Open dialog, double click in the Finder
or drag into DataGraph.
Before version 3.1, DataGraph came with a
command line utility called dgraph, which you could launch from the command
line and specify input and output files. This will not work if your files are in
the home directory, which limits this feature quite a bit to say the least.
In addition, command line utilities are not allowed on the Mac App store, and
even though dgraph was inside the DataGraph application, the safest thing is
to not include it there and ask you to install it separately if you want this
feature.
This means that dgraph and the new command line utility
dgraphconnect have to be downloaded separately and this page is the home page
for those utilities. Since the Automator actions were handled through the
command line utility those utilities also have to be downloaded from here.