Define Animation Panel Bug

On a MAC, the define animation panel keeps reverting back to its default parameters of Not looping and setting the duration back to 5000. My custom settings appear to save ok in design mode, but after I preview in Interact mode, the animation won't loop in interact mode and I noticed in design mode the Frame animation Editor > Define Settings panel Loop no longer says Yes, and the duration no longer indicates 1000, it reverts back to 5000.

These are the action sets I'm using on this element.
I have the element hidden and set to fade in and show on load after 4000 mil. seconds.  The element is also set to transition into place and animate on load after 4000 mil secs. 

In the Frame Animation Editor: Loop is set to YES and duration to 1000 mil. sec.) 

In  Interact mode the animation transitions and plays the animation loop once and stops looping the animation, and when I go into the Frame ANimation editor the settings have reverted back to default, no looping, 5000 duration).    The element also has an on tap action to show a separate text element on screen but that works ok.

This works ok on my PC but not on a MAC.  (I decided to try using IB3 on my MacPro as was running into major slowness issues on my Sony Vaio. )

Please advise when you are able to fix this loop / duration reverting problem on a Mac. Thanks.