David,
I don't have an answer for you.

I haven't read of anyone else ending up in Demo mode and I'm pretty much a novice myself. I still use Music Creator 6 as my main DAW and have been getting familiar with Home Studio when this news hit.
MC6 is 32 bit. I'm running HS in 32 bit mode so the tools that ship with it, such as Studio Instruments VSTi, will be compatible with PG Music products. Home Studio 64 bit mode is available by clicking one checkbox.
May I suggest you try the
+++ Cakewalk forum +++?