RE: Bundle files stopped working. know why?
Probaply you used Audiosnap in drum replacement. Audiosnap-clips can not be saved in bundle-files. Does your soundcard support 24 bits? And anyway, I wouldn't recommend using bundle files. Project files with per project audio folders are a better option.
Did you go "deep" enough to change the bit depth? I'm not at my daw, and I don't remember it by heart, but there's one view which always shows the bit depth greyed out, and it's supposed to be so. The view for the changing is another one (Global>Audio???)
SONAR PE 8.5.3, Asus P5B, 2,4 Ghz Dual Core, 4 Gb RAM, GF 7300, EMU 1820, Bluetube Pre - Kontakt4, Ozone, Addictive Drums, PSP Mixpack2, Melda Creative Pack, Melodyne Plugin etc.
The benefit of being a middle aged amateur is the low number of years of frustration ahead of you.