Disappearing Windows

So…i’ve been using SketchUp 2015 on a brand new MacBook Pro running OSX Yosemite. I am using VRAY 2.0 for Sketchup…and when i create new materials…i can only load about 2-4 bitmaps and then the window which allows me to select an external file disappears and never reappears…i have to save, quit out of SketchUp, and then start the material creation process again…

i know this is odd to wrap your head around when it’s explained…so i’ve made a video of the issue which you can view here…

please let me know if there is a fix/patch for such an issue…thanks…

cheers…
d

Just a guess. It looks like some of the files are out on DropBox? Could that somehow be involved?