It looks like the following checkin left some bogus file references in the manifest.
r11417 | juga | 2009-11-24 16:08:04 PST
Added few todo and removed non used Chat state related classes.
The offending entries in the manifest are as follows:
<component class="org.igniterealtime.xiff.data.chat.ChatState />
manifest.xml (7765 Bytes)