I got an error with some garbage on screen the first time I tried to activate zBrush4.
When I tried again I got:
This license key has already been activated for this machine.
To send another copy of the activation key, please click the button below.
If I do this, I get an:
There was an error emailing your activation key.
Please try again.
In the top line of the page I can see this:Warning: mail() [function.mail]: Could not execute mail delivery program ‘/usr/sbin/sendmail -t -i’ in /home/regadmin/public_html/activation/opt/resend.php on line 75
If I try again I get the same result and of course no EMail so far… 

