I am running Photo Mechanic version 5 (Build 18359) on macOS Sierra (10.12.4)
I am noticing some weird behavior when I try and preview images in some folders. When I double click the thumbnail in the Contact Sheet window, nothing happens. There is no magnifying glass icon when I hover over the thumbnail. I am unable to preview the image. When I drag the image to Photoshop, it launches Adobe Camera Raw and I am able to zoom in on the image there. It does appear that there is nothing wrong with the image file.
This happens only in a couple of folders that are 2004 and older. Other folders work fine.
Thanks in advance,