Help! Sick Paph lowii var richardianum X sib

[realoldbeachbum]

Album — Postimages

This paph has been in my care for 5 months and was repotted about 2 months ago. It hasn't bloomed, but has produced new growths and was extremely healthy until a week ago when I noticed yellow/brown areas emerging from the base of two healthy growths.

The discoloration has not yet moved to leaf tips. Also, there is no foul odor.

It has been inside, under lights, with day temps 75F-ish and night temps 65F-ish.

The first pic is one growth that I removed. It did not have many roots, but they were firm.

In order to remove the discolored areas completely, I had to cut into the rhizome, which I immediately sprayed with a tad of Phyton27, then sealed with cinnamon. (See last pic.)

I searched the internet for pics of what the problem might be, but could not find a picture that looked exactly like this.

Please let me know if you have any idea as to what this might be, and the best action to take for the remainder of this plant.

Thank you so very much! ROBB