RHD, I'm not familiar with the Mac UI but on PC, in the Preferences dialog (which you can activate from the Sketchup menu on the Mac AFAIK), the first tab is "Applications" where I need to identify the image editor I want to use for this "interactive, on-the-fly" image editing. Have you set that in your SU?

Yes, Watermark is the way to do it. Thank you very much Wo3Dan. Maximum appreciation.

Thanks for the input. By the way, how can I get rid of the Google Earth terrain? I can turn off the visibility of it, but I'm unable to select and delete it. The building models were done individually, and georeferenced. The whole model was put together from those individual models. I'm actually using a version with even more stuff in it than the one I linked. Anyway, any input on how to solve the clipping effects? Might the random triangles somehow be related to the z fighting (wouldn't it be y fighting ??) in the google earth terrain.

Collin, could you point us at a video output with this default?