Silver Efex 4 dropping color channel

Hello: I’m using Silver Efex 4 on Windows 10. Everything was fine since the install months back, but then two weeks ago when I open a B&W RGB jpeg, it drops the color channel and renders the default image in grayscale. I work a lot with historic photos and I need to be able to see the natural sepia tones and discoloration in Silver Efex when I work with them. Is anyone else seeing this?

As standard, the Compare function shows you the neutral state (Neutral B&W).

To compare with the colour version look for the History and set it to → “Original Image”

( the same in SEP2 )