Fairly new to all this and just finished my first installation. Everything worked fine, switched from test environment to live, couldn't login to fop2. Looked like all I need to do was re-activate the license. Did that, see screeny below...
http://www.iinteractivesolutions.com/wp-content/uploads/fop2.png

So, now no Manager Authentication? Here are my fop2.cfg and amportal.conf settings (if more of these files are needed please lemme know)

[admin]
secret = ########
deny=0.0.0.0/0.0.0.0
permit=127.0.0.1/255.255.255.0
read = system,call,log,verbose,command,agent,user,config,command,dtmf,reporting,cdr,dialplan,originate
write = system,call,log,verbose,command,agent,user,config,command,dtmf,reporting,cdr,dialplan,originate

and this for fop2.cfg

[general]
; AMI definitions
manager_host=localhost
manager_port=5038
manager_user=admin
manager_secret=########
;event_mask=agent,call,command,system,user,dialplan

I hate to be such a noob at this and I sincerely appreciate any help I can get. Also, thanks for the tip on changing out the fop v. fop2 link! I'll be using that as soon as I can get fop2 login credentials rocking.

Have a great day!
M.