This is very confusing because I didn't do any of this. I do not have SW on my computer; I run 64bit Creo Pro 2.0 M040, and I installed whatever swexplorer was available in July, 2014. And it now works when I open and filter All Files because I now see *.sldprt files and they open as ABT features.
All I can think is that whatever the DLL does, it is a 32 bit windows function and that it is independent of the 64bit Creo app.