issue installing Batch export/import

I came to this script by Jos Balcaen two ways, one of them allowed me to download an .mse script that 3DS sees when I use Run, the other I later found on this page when later I investigated a problem I ran into running the script via the first path. Namely, when I ran josbalcaen_batch_exporter_importer.mse and pointed to the folder of fbx's I wanted to batch load I saw 3DS finding and trying to open all 100+ fbx files, but at the end only a single, generically named, meshNode. Evidently, 3DS sees all these meshes with the same generic name and doesn't know what to do with them, so shows just one. When later I found this page with the same script, I downloaded the .mzp, open it to see not just this one .mse script, but organized folders, obviously I was missing something. And then I see from the above link, a GUI for a window missing on my end providing a place to assign unique names. I tried installing, but 3DS returns a Fail to open file. Thanks for any thoughts.