I just used this to calibrate my Epson 8350 in hopes of getting better contrast and black levels and to my mixed surprise, found the settings I had very close to optimal based on the test signals.
I did find one issue however. While viewing the gray scale ramp and 2% and 4% gray scale images, the 2% image was simply not viewable. Even if I bumped brightness all the way up to where the 4% was a very bright gray, the 2% was simply not there. I have to think this is an error on the disc and wanted to see if anyone else noticed it or if my projector is completely lost on this calibration.