Someone (perhaps the OP) emailed the same problem to me (if >n ADX files in directory, TunerPro crashes when attempting to edit the active ADX). I also have not been able to reproduce it.

Most likely a result of this being a multi-root equation. I haven't plotted it to see what it looks like, though. TunerPro converts from the calculated value back to the raw value stored in the bin...

There are no implicit operators in TunerPro like there is in hand-written algebra. You're missing a few * operators. For instance, this:
(-.0315x + 4.5)(-.0315x + 4.5)(-.0315x +...

What's the patching problem referenced here? Please email me the details and files to reproduce whatever the issue is. Thanks!