Stabilization options greyed out

I saw a post similar to this elsewhere, but I'm asking because I think this is a little different. 

I have four video clips recently taken with a Virb 360, but none of the stabilization options are available.   The only thing I have done is to import the clips;  no trimming or editing of any type.   They have all the pertinent g-metrix data in it.  The videos were recorded with exactly the same settings as I have in the past and with the same exact camera.  However, for some reason I cannot apply stabilization on this batch.  The options are grayed out.

I have re-imported the video files, deleted and reinstalled Virb Edit program.   I'm totally stumped.  

Any advice or suggestions?  Thank you!