Islander

I just installed and registered VPE (v8.45) on a Windows10 PC - I have tried various video files that play fine (MP4, MOV, M4V) and get the same result - whether I drag the files to the files window, or use Add File(s), the file ends up under the Audio Files tab - if you right click>Properties the dialogue box that opens thinks the file type is "Audio" - nothing else happens (no Clip Preview, nothing in Video Track of Audio Track) - I have tried re-installing, rebooting, etc. Any ideas what I am missing?