I'm trying to start server.py on CentOS-6.2-x86 but I receive this error starting server.py. I have edited keypair.py

Firstly I start skypekit:
[root@server /]# ./SkypeKit/bin/linux-x86/RUNTIME_linux-x86-skypekit-voicertp-vi
deortp_3.7.0 -x -m -d logs
SkypeRuntime Copyright (C) 2003-2012 Skype Technologies S.A.
SkypeRuntime Version: 3.7/0/5.8.0.158//
Proprietary and confidential, do not share this application.
Started logging to 'logs.20120429'
ERR: can not create server (nil) id(0)
Aborted

Then when I try to start server.py:
[root@server tutorial]# python ./server.py user pass

Skype IP lookup deamon

^[OA^[OATraceback (most recent call last):
File "./server.py", line 48, in
MySkype = Skype.GetSkype(keypair.keyFileName);
File "/SkypeKit//interfaces/skype/python/Skype.py", line 9155, in GetSkype
return Skype(skypekit.SkypeKit(apptoken, module_id2classes, has_event_thread
, host, port, logtransport, secure, setup))
File "/SkypeKit//ipc/python/skypekit.py", line 200, in init
self.handshake(sock, setup, cert)
File "/SkypeKit//ipc/python/skypekit.py", line 219, in handshake
raise ConnectionClosed

Hello,

I've done these steps in order;

1- I've set keypair on keypair.py
3- I've compiled voicertphost-loopback and run it.
4- I've run RUNTIME_linux-x86-skypekit-voicertp-videortp_3.7.0 -x -m -d logname command

But when I run server.py with user and pass I'm getting this error;

#RUNTIME_linux-x86-skypekit-voicertp-videortp_3.7.0  -x -m -d logname
SkypeRuntime Copyright (C) 2003-2012 Skype Technologies S.A.
SkypeRuntime Version: 3.7/0/5.8.0.158//
Proprietary and confidential, do not share this application.
Started logging to 'logname.20141114'
UnixSocket.cpp:101(Connect): /tmp/vidrtp_from_skypekit_key: failed to connect: Connection refused

server.py output:

#python server.py johndoe pass
****************************************************************************
Skype IP lookup deamon
****************************************************************************
Logging in with johndoe

What do you think problem is?

My operating system is Ubuntu 14.04 x86

Skype IP lookup deamon

Logging in with xxxxxxx
Login complete.
Opening socket...
Traceback (most recent call last):
File "./server.py", line 98, in
os.chmod("/tmp/skype_iplookup", stat.S_IRWXU | stat.S_IRGRP | stat.S_IRWXO)
NameError: name 'stat' is not defined