I can add users using MySql, but when I try to add an alias or a contact for a user, the process reamins waiting and when I stop it the message is always the same one:

[root@pclabo scripts]# serctl alias add 331105 sip:user331105@sipproxy.plczar.endesa.es
sip:user331105@sipproxy.plczar.endesa.es (((CTR C)))
/usr/local/sbin/serctl: line 240: /tmp/ser_fifo: Interrupted system call
Terminated

Do you know what is the problem? Is this temporary file essential or can I just delete it fromo de serconf file? Thank you.