Tmo 7105t with 18.104.22.1682 confirmed. Used the knology.net .jad link to install.
I had the 22.214.171.1246 OS installed originally. I deleted the Vendor.xml file and installed the new 126.96.36.1992 OS completely (not just the .alx file).
The Dimension-icon theme installed successfully. Then I downloaded the Zen theme and it's working great!
Took a while to figure out what I was doing, but hopefully this helps some of you.