Can't get 3D view to show SRTM

Hi all,

Sorry, but a couple of simple questions... (I'm relatively new to Global Mapper).

I have SRTM data that I can see and manipulate in standard view, but when I click on 3D the view is just of ocean and sky - no data. There is a warning message that pops up to indicate I have OpenGL 3.0, not 3.3 and states that some functionality may not be available. Would this extend to not rendering the elevation data? 

I also want to drape a Landsat image on the SRTM, what do I need to do (assuming I can actually visualise the SRTM data in 3D) to view this in 3D?

I am running GM (v.19) under VMWare Fusion on a 2017 MacBook Pro.

Thanks for any suggestions.

Brett
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