Well, sounds very familiar, but ... can't recall. ZCM 11.3.2. Novell ZENworks file upload plug-in as should. When I try to select a file wo extension to upload it ... does not show it at all. But I have such uploaded at some point. Probably I forgot something. It is not a big deal, I can set ext and during install on device remove it, but ... anyway.
More thanks, Alar.