New update.
I used a WinXP bottle and re-installed the DC6 package. Still it will open and run audio files, but it will not apply a filter.
The DC6 software creates a .pkf file seemingly as a temp file, and so the Mac makes that file, but it kicks out an error message when it actually attempts to write the filter changes to the .pkf file.
I am stumped now and don't know how to proceed. I have sent an email to the developer informing him of the progress, maybe it's as simple as a .dll file or something easy.
I also attempted to use Darwine 0.9.53v2 and I got exactly the same results.
Any suggestions?