Z3ta+2... It's the only plug in I have purchased that doesn't work 'out of the box' (so to speak). I am on OSX 10.7.5 running latest version of Logic Studio. Issue is that Z3TA+ 2 fails validation. I have tried everything to get it to work - clean install, AU manager, many restarts, rescans etc. If anyone has a fix I'd like some help.... Is the problem Z3TA or OSX 10.7.5? Should I upgrade to Mountain Lion? Anyone had this problem?

I just had the same problem,you will find the solution in a previous forum:
http://forum.cakewalk.com/tm.aspx?m=2652744
It works and it is is very simple indeed.
Cheers

Thanks mate, that finally worked after a day and a half of screwing around under the hood. 

WOuldn't agree that it's easy to fix; I went as far as upgrading my OS as well.

Other manufacturers don't have this issue, Cakewalk should hire some better coders perhaps?

ANyway, sorted, so I hope it sounds as good...

BOOM!

Glad it works.I believe there is an update now that fixes that bug.Hope you're enjoying Z3TA.