CPM.js errors encountered with published output

I’m getting the following errors when clicking on navigation buttons (image buttons used) on published output when viewing it in Google Chrome.

Any advice / solutions?

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Uncaught TypeError: Cannot read property 'id' of null

    at a.Shape.HandleMouseEventOnStateItems (CPM.js:4520)

    at a.Shape.a.DisplayObject.ForceMouseOut (CPM.js:4471)

    at b.MouseOverManager.<anonymous> (CPM.js:4518)

    at b.MouseOverManager.DoMouseOutOnCurrMouseOverItem (CPM.js:4649)

    at c (CPM.js:4652)

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Uncaught TypeError: Cannot read property 'id' of null

    at a.Shape.HandleMouseEventOnStateItems (CPM.js:4520)

    at a.Shape.a.DisplayObject.ForceMouseOut (CPM.js:4471)

    at b.MouseOverManager.<anonymous> (CPM.js:4518)

    at b.MouseOverManager.DoMouseOutOnCurrMouseOverItem (CPM.js:4649)

    at b.MouseOverManager.addMouseOverItem (CPM.js:4648)

    at a.Shape.HandleMouseEventOnStateItems (CPM.js:4518)

    at a.Shape.changeStateOnMouseEvents (CPM.js:4516)

    at e (CPM.js:4471)

    at HTMLDivElement.<anonymous> (CPM.js:4474)

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Operating System: Windows 10 Pro 64-bit

Version: Adobe Captivate 9.0.2.437

Published output: SWF & HTML

Tested Google Chrome Versions: 56 & 57 (64-bit)