Okay I'm stumped. There appears to be a bug in the Gantry Slideshow particle as on the 5th slide (which does not exist) it shows a blank slide. I thought maybe I did something wrong so I started to create a brand new slideshow, not copying a previous slide and creating everything from scratch. Well, the exact same issue appears in the second Slideshow after only 4 slides created it advances to a non-existent 5th slide that is blank?
Any ideas? I can't launch till this is fixed (sigh).
Thanks as always Ivo!!