Storyline 2 Base Layer controls

Unable to control whether Base layer appears:  Probably not the correct place to start this, but here it goes.  I have converted a lesson under development from Storyline to Storyline 2.  I have numerous slides with varying numbers of layers; some configured to Hide other layers and the Base Layer and some designed to build the presentation -  layer over layer. Regardless of the property setting on the sub-layers the base layer shows through.

I have tried - hiding everything on the sub-layer to ensure it was not some ghost image

Changed the properties - review and change them back

adding a new layer instead of a copy

activating and deactivating Base Layer objects via the sub-layer timeline.

installed Update 4 and rebooting

Anyone have other suggestions?

 

On side note - I got Storyline 1 working again; these slides work perfect in the backup copy.