Unable to load config sip.conf after enabling extconfig.conf

Good day!
At first sorry for my english.
I’am trying to implement ARA and have faced one problem.
I have the following error: [color=#BF0000]Unable to load config sip.conf [/color] just after i added lines in my
extconfig.conf like this:

sip.conf => odbc,asterisk-connector,sip_buddies
;sipusers => odbc,asterisk-connector,sip_buddies

If one of them is uncommented the error takes place. But if they are commented chan_sip.so is loaded without errors.
What can it be?
Thank you in advance!