afatac, on 10 April 2017 - 07:46 AM, said:
My original images are stored in an external hard disk drive. I notice that if my external hdd is not attached and I am trying to see the preview of an image in portrait format...
I saw this kind of behavior many times. but for a couple of seconds only until the picture was rendered completely and correctly. Unlike yours, my images are stored on an internal HDD, while the Daminion catalog as well as all software reside on an SSD.
Due to the fact that an external (USB attached?) drive is much slower than an internal, I assume the rendering process could be much longer than a couple of seconds. How long did you wait until closing the preview?