<sigh>.  This is infuriating.  No idea what the problem could be.  I have Skybox installed on 4 PCs.  2 desktops and my regular laptop plus a test laptop I borrowed.  I just want to use airscreen from my laptop.  On both of the desktops and on the test laptop I borrowed, when I add movies to the Skybox library, after a few seconds a thumbnail for the movie appears and the movie time is displayed.  If I right click on the movie I can choose PREVIEW and the movie plays.  I can access the movies from my Oculus Quest and everything is fine.  But when I add movies to the library on my own laptop - the computer I regularly use and wanted airscreen for in the first place, after a few seconds I see the name of the movie.  And that's it.  No thumbnail and no movie length.  There's nothing to preview.  I CAN access that computer with airscreen from my headset and I get exactly the same thing.  The movies are listed.  But nothing happens when I click on them.  I've tried adding from both the computer libraries and from just a temporary directory - no change.  I've uninstalled and reinstalled 3 times - no change.  I've run Skybox as an administrator - no change.  I've compared the folder permissions and settings between all of the PCs and they all APPEAR the same.  But clearly something is different.  I'm out of ideas and I haven't heard back from Skybox in a week and a half so  I have no idea if they have any idea, so I'd much appreciate any suggestions.  (I HAVE googled and find nothing even close to helpful).
Thanks
Steve