Redfire Plugin

We have downloaded redfire plugin from http://code.google.com/p/redfire/downloads/list redfire-370-0.0.06.zip extracted and copied redfire.war file to openfire/plugin. After starting openfire in GUI console mode it is flashing the error which is attached and there is no redfire plugin shown in Admin Console

Can any one help us on same
redfire.txt.zip (3390 Bytes)