Neatline Static Image layer not appearing


Omeka v2.3
Neatline v2.5.0

I was hoping build a sample Neatline exhibit based off of a static image layer. However the image editor does not display the image I point to for the base layer (links to image and exhibit below). I've also tried different images and links to images hosted on different sites none of which are working.

Zoom level is only 3, spatial layer is off.

Static Image