I use Ilok 2 and was forced to upgrade to Play 6 only, which is only 64 bit. I wanted to keep older 32 bit play to coexist with Play 6... it won't. Play 6 works fine in Cakewalk Bandlab, but there is apparently a need to go to settings, and turn off "Zero controllers on stop", or the volume can drop off. I haven't tried it yet, but there is a thread about this that's newer than this thread.