Well,
I have the same problem. I don't use freepbx so I suppose that is normal that I have to create the DB and the tables and say to FOP2 where to find these information.
If so where I have to set up these information? In which way? Which is the format of the DB? Is there a documentation for people, like me, that don't use freepbx?
Thanks so much!
Gianluca
It was iptables that block the port...now so far so good 
Thanks so much Nicolas
Goodmorning to all,
I have installed FOP2 on my Asterisk server but I have some problem. The hardware configuration is this one:
Asterisk 1.8.14.1
S.O.= Ubuntu Server 12.04 LTS
WebServer = Apache2
DB= MySQL
Well, here there are my configuration files (I omit the lines that begins with ; 
fop2.cfg
[general]
; AMI definitions
manager_host=127.0.0.1
manager_port=5038
manager_user=admin
manager_secret=amp111
;event_mask=agent,call,command,system,user,dialplan
poll_interval = 86400
poll_voicemail = 1
monitor_ipaddress = 0
blind_transfer = 1
spy_options="bq"
whisper_options = "w"
monitor_filename=/var/spool/asterisk/monitor/${ORIG_EXTENSION}_${DEST_EXTENSION}_%h%i%s_${UNIQUEID}
monitor_format=wav
monitor_mix=true
voicemail_path=/var/spool/asterisk/voicemail
user=210:1234:all:queues
user=211:1234:all:queues
buttonfile=buttons.cfg
buttons.cfg
[SIP/210]
type=extension
extension=210
context=internal
label=User 1
mailbox=210@default
extenvoicemail=*210@default
email=user1@domain.com
[SIP/201]
type=extension
extension=201
context=internal
label=User 2
mailbox=201@default
extenvoicemail=*201@default
email=user2@domain.com
manager.conf
[general]
enabled = yes
webenabled = yes
port = 5038
bindaddr = 127.0.0.1
[admin]
secret = amp111
deny = 0.0.0.0/0.0.0.0
permit = 127.0.0.1/255.255.255.0
read = system,call,command,agent,user,originate,dialplan
write = system,call,command,agent,user,originate
Now, I try to execute this command:
sudo /usr/local/fop2/fop2_server --test
And the system answer me in that way:
Flash Operator Panel 2 - No valid license found. Demo Mode
Connection to manager OK!
So I suppose that everything is configured well. When I try to login by web (I open in the iptables the port 80) I enter the right username and password and from that moment the system "try to connect" to the server but after a while it respond me that the server is down.
Where is wrong?
Thanks for any help
Gianluca