We released an update for Z3TA+ 2 on Mac that fixes the problems with the constant registration prompt and lack of audio output. Please find it in the Products list of your Cakewalk account.
In return for the delay, Cakewalk will be offering three of the Mutant expansion packs to Z3TA+ 2 customers who were inconvenienced by this. Please contact Cakewalk support to take advantage of this offer.
 
Edit: specified the Mutant packs as part of this offer.

Problem Solved! 
Thanks cakewalk, also for the free expansions. Very nice gesture.
 
Also I'd like to know if we can expect a fix for Rapture and Dimension Pro on osx 10.9 / 10.10 anytime soon?
 
Best regards,
 
Gidi

Or bugs with any of the other cakewalk plugins for that matter on any platform. I notice there are still bugs with z3ta 2 on PC.

Nice gesture though, well done for fixing must have been a tough nut to crack.

Glad to hear the positive feedback, many people have already taken us up on this offer.
Moving forward, though, only the Mutant expansions will be part of this instead of keeping it open to all our packs. This has to do with royalties. Those who have received packs already will keep what you have.
 
Unfortunately there is no news about Rapture and Dimension Pro on current versions of the Mac OS. Please submit any bugs that you find to our Problem Report form: https://www.cakewalk.com/Support/Contact/Problem-Report.

The support link above does not allow for Z3ta+ support!  I wanted to claim the Mutant pack give away as well as report a problem with crashing in Live 9 64-bit, but no apart way to do so!

Thank you for this! I've missed this synth since going over to Mac! It works great here!

Jcrystal
The support link above does not allow for Z3ta+ support!

The problem reporter lists Z3TA+2 in the drop down. Z3TA+2 is also the product with the free expansion pack offer. If you are having issues with the original Z3TA+, it is out of support, see the Technical Support Section on this page for supported products http://www.cakewalk.com/Support/Contact

Thanks!
 

Just received the Mutant packs - thanks!