Both Johns,
OK, do a little test for me. Use a gloss sheet, and try calibrating from the front panel on the printer.
Also, do this in the dark. Humor me. Use a flashlight, but keep it away from the interior of the printer.
Just try it. A test. Sheet must be at least 11x14.
If it doesn't work, try again with a new sheet of gloss, and create a new paper in paper presets in the Utility.
Make sure the printer is in the dark. Create a new custom paper and use a gloss paper preset.
Let's see if either of you have any luck with the test.
Mark