Open the Insets Pod and check to see if any of the graphics are listed there. If they are not, then any graphics that are in your documents have been imported by copy and there is nothing that FM can generate for a List (or Index) of References. Otherwise, it works just fine here on my installations.
Also, are you fully patched to FM12.0.2?
Apparently it was as simple as updating to FM 12.0.2.
From the Adobe FrameMaker 12.0.2 ReadMe file:
- Generating a list or an index of references (imported graphics) results in a blank file. (Ref#: 3725424)
I don't know that it is accurately called an "enhancement" but more of a "fix" since it has always worked in earlier versions.
Anyway, thanks again!