OK, this is odd. This is an older file I’m working with, maybe from January or so. When I just download sample data (CTACardio), place a fiducial, and right click in the 3D view, it works fine.
I took a look at the fcsv file and for my older file that does not work, I do not have entries for associatedNodeID for most of the entries, whereas the newer one I just made from the demo data has vtkMRMLScalarVolumeNode1 for all fiducials.
I also have CoordinateSystem=0 at the top, whereas the file I just created has LPS.
I did try hand-changing the coordinate system to LPS but this moves all my fiducials, and right click still doesn’t work.
I also added vtkMRMLScalarVolumeNode1 (which is a real, correct node) to all lines and right click still doesn’t work.
I really do think this is some kind of pilot error (me), or possibly an old file incompatibility (less likely).