Error 'Invalid Media' when trying to import .avi files

I just installed HitFilm 4 Express on my Dell XPS 13 laptop and when I try to import an avi file I get a Invalid Media error - The media could not be imported.  I tried copying to the local drive but get the same message.  Also tried importing different ways; drag, search etc but get the same message.  Mov files from the same drive import fine.

I am running Windows 10 on an i5-6200U with 8GB of ram 

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