I've been using Mediaface 2.4 for five years and I haven't had any problems with it until I bought a new HP 6940 Deskjet printer last year. I see no reason for an upgrade as this does everything I need it to do. I originally installed it on Windows 98, but I'm currently running Windows XP SP2. Whenever I print CD inserts and trays with solid colors, I will get bars, stripes, and blocks of a different shade within the perforated sections of the sheet. A workaround that I discovered is to move the section (spine, back, etc.) ever so slightly and this will sometimes solve the problem. Also, if I select "Automatic" instead of "Premium Photo Paper" that sometimes will work, but not always, and I end up wasting a lot of paper to get one that comes out right. My old HP 960 Deskjet printer never had this problem.
I tried printing the CD trays on different paper (other than the Neato inserts) and I still got the bars, but when I printed the CD trays from Photoshop, I didn't get any bars, so it must be an incompatibility problem - the HP 6940 and Mediaface 2. Perhaps an upgrade to Mediaface 4 or 5 will solve the problem.
Has anyone else dealt with this issue?