Ableton can't find any of the studio instruments package

Hey, I was wondering if someone could help me.

i've recently purchased Cakewalk Studio Instruments, and I have them registered and installed in my VST folder with others like Sylenth1 etc.  I use ableton Live 8 suite and have other VSTs that show in the folder which i can use in ableton, but none of the Cakewalk products show up.  I've copied the .dll files properly.   

Does anyone have a suggestion for why cakewalk products aren't showing up? and does anyone know how to fix this?

software:  Ableton Live 8 suite (32 bit)
operating: Windows 8 (64 bit)

Thanks !