I installed .519 and went to being using it tonight - As soon as I started up autofocus, I got an windows defender alert about a trojan, for dirlist.exe in the SGP folder.
Not sure it is really related to SGPO but posting just in case.
After this the pictures taken with my nikon would no longer load into the preview window. IO had to roll back to the last stable release (.479)
OS: windows 10 latest update