unable to start mod_sspresence - ejabberd

[akhildave]

Hi,
i am unable to start ejabber server because of mod_sspresence included in ejabberd.cfg file... can you please guide me.. what am i missing.. i am running social stream on local host.... My log file contents are below

ejabberd.log..........
=INFO REPORT==== 2014-04-08 21:47:03 ===
I(<0.37.0>:cyrsasl_digest:44) : FQDN used to check DIGEST-MD5 SASL authentication: "ajdave-desktop"

=INFO REPORT==== 2014-04-08 21:47:03 ===
I(<0.37.0>:mod_sspresence:32) : mod_sspresence starting

=ERROR REPORT==== 2014-04-08 21:47:03 ===
C(<0.37.0>:gen_mod:75) : Problem starting the module mod_sspresence for host "localhost"
options: []
error: undef

=ERROR REPORT==== 2014-04-08 21:47:03 ===
C(<0.37.0>:gen_mod:80) : ejabberd initialization was aborted because a module start failed.
...............

Auth.log

I, [2014-04-08T21:23:17.819277 #3917] INFO -- : 3917: Starting ejabberd authentication service
I, [2014-04-08T21:23:17.820138 #3918] INFO -- : 3918: Starting ejabberd authentication service
I, [2014-04-08T21:23:17.821483 #3916] INFO -- : 3916: Starting ejabberd authentication service
E, [2014-04-08T21:23:20.487351 #3916] ERROR -- : 3916: NoMethodError: undefined method unpack' for nil:NilClass E, [2014-04-08T21:23:20.487351 #3918] ERROR -- : 3918: NoMethodError: undefined methodunpack' for nil:NilClass
E, [2014-04-08T21:23:20.487411 #3917] ERROR -- : 3917: NoMethodError: undefined method unpack' for nil:NilClass E, [2014-04-08T21:23:20.487482 #3916] ERROR -- : 3916: /etc/ejabberd/ejabberd_scripts/authentication_script:132:inblock in

'
/etc/ejabberd/ejabberd_scripts/authentication_script:126:in loop' /etc/ejabberd/ejabberd_scripts/authentication_script:126:in'
E, [2014-04-08T21:23:20.487506 #3918] ERROR -- : 3918: /etc/ejabberd/ejabberd_scripts/authentication_script:132:in block in <main>' /etc/ejabberd/ejabberd_scripts/authentication_script:126:inloop'
/etc/ejabberd/ejabberd_scripts/authentication_script:126:in <main>' E, [2014-04-08T21:23:20.487528 #3917] ERROR -- : 3917: /etc/ejabberd/ejabberd_scripts/authentication_script:132:inblock in '
/etc/ejabberd/ejabberd_scripts/authentication_script:126:in loop' /etc/ejabberd/ejabberd_scripts/authentication_script:126:in'
E, [2014-04-08T21:23:20.487536 #3916] ERROR -- : 3916: Finish process
E, [2014-04-08T21:23:20.487562 #3918] ERROR -- : 3918: Finish process
E, [2014-04-08T21:23:20.487583 #3917] ERROR -- : 3917: Finish process