Hi all
I am installing OpenBSC.I just following 
http://openbsc.osmocom.org/trac/wiki/Building_OpenBSC
(I am just  Building libosmocore, Building libosmo-abis, Building libosmo-netif, Building OpenBSC and install library.)
But when I tried to run OpenBSC,I encounter with this error(problem).

user12@ubuntu:~$ cd '/home/user12/openbsc/openbsc/src/osmo-nitb'
user12@ubuntu:~/openbsc/openbsc/src/osmo-nitb$ sudo ./osmo-nitb
<0005> bsc_init.c:492 Failed to parse the config file: 'openbsc.cfg'

Or how do I run the software(OpenBSC)!
Or do I have to install something missing?
Note: My Linux is version ubuntu 12.04 .
Please help me.
thank you.