Layout open with empty window ( WIP 5D143w) SOLVED

Hello,

Since I download last WIP (5D143w), Layout open on an empty windows (nothing appear except line of separation between thumbnails and layout view)
But latest Rhino 5.2.4 5C262 works perfectly.

I’m still on OS X Capitan 10.11.5

Any ideas about solving that problem?

Thank you

Click the + button?

Uninstall and reinstall solve me problem, thank you Maxx, but there where absolutely nothing on the window, only grey background.

Thank you