Cannot register...

Hopefully someone can give me some insight!

I recently installed Avast (free home version), and I keep getting reminders to register. However, every time that I try to register i continually get an error message:

“avast Configuration file with avast! registration could not be stored (error -60007).”

When trying to register via the actual application, I receive the following error message:

"Authorization failed.

• Error code: 7015
• Error ident: Error Domain=NSOSStatusErrorDomain Code=-60007 “The operation couldn’t be completed. (OSStatus error -60007.)” (errAuthorizationInteractionNotAllowed: The authorization was denied since no user interaction was possible. "

I have a Mac with OSX version 10.9.1, build 13842

Hopefully someone can help!

http://forum.avast.com/index.php?topic=138021.msg1012171#msg1012171
http://forum.avast.com/index.php?topic=85752.msg693965#msg693965