I've not had much luck installing Z3TA+ 2.0 and CA 2A on a new Macbook Pro 15" running Yosemite. The error message is "Registration code invalid." These were perfectly working codes/serial numbers used on my old machine before the migration. Has anyone experienced something similar on OS X? I am running Live 9 by the way. Had the same error trying to activate in Logic Pro X.

 
there was a similar case. I have mac pro (os x yosemite) logic pro 9 - registration error Z3ta

I also have authorization issues w/ Z3ta, running Logic 10.1 on OSX 10.9.5.
 
Please make sure to submit a ticket to Cakewalk support.

I put it a ticket yesterday and had a reply first thing this morning. Known issue. The gentlemen at Cakewalk are working on a fix.
 

I guess I can jump on this. It's been annoying me for days now. Hope a fix is around the corner...

i´ve the problem i copy the right Registercode from my cakewalk account and i become the message "Your code is Invalid" please enter the code as it was sent from Cakewalk 

 

Right click and run as administrator. Then enter validation code.

That probably won't work on a Mac Otherwise, it's a great suggestion

AlanSJackson
Right click and run as administrator. Then enter validation code.

i work with on iMac with OS 10.10.1 i have the same problem with Dimension Pro. There is not even the key accepted :(  

Since Mavericks, Dimension and Rapture can not be authorized on Mac OS X because of some technical reason. Can't remember the details. So until they update DimPro and Rapture, it's not going to work unless you are on an old OS.