Can't start SIP

hi,

i had installed SIP plugin into our openfire server, and i only set the SIP server and left other field empty. then i installed the pllugin into my SPARK. then run the SPARK.

Starting phone…

failed to start phone…try again…no luck

the error in my SPARK log showed

SEVERE: Unable to load plugin SIP Phone Plugin due to missing -Tag in plugin.xml.

i tried to disable all antivirus and firewall also no luck.

no one?