Thanks a lot for the quick reply, here is the new log via the new version PM
Interesting. No scaling is happening according to the log.
I'd like you to do another test. Copy your image to a folder all by itself and browse only that folder. Empty your cache (in Preferences/Caching) and then reproduce the problem and then while PM is running, switch out to the Finder and zip up the cache folder. It is in this location by default:
~/Library/Caches/Photo Mechanic/
There should be a cache folder at that path. Compress it and post it here.
I'd like to see if the scaling itself is somehow the cause of the problem.
Thanks,
-Kirk