Don't Install the T3 DIA Compatibility PRCs on a T5

We've had half a dozen customers angrily email us that the DIA is no longer working on their T5 after installing Pocket Tunes.  It turns out they installed the T3 DIA compatibility PRCs.  The only solution that I know of is to perform a hard reset and restore your files except for those 2 PRCs.  Two problems here:

1. Why the hell did PalmOne let the T3 compatibility PRCs screw up the T5?

2. Why do customers insist on installing files for devices that they don't have?  (In the past, we've heard from customers who installed these files on their iQues and Zodiacs, too!)

If you're a Palm developer, it's another support nightmare to worry about.  Have fun!