dAmn JS Error

<chat.deviantart.com>
 
 dAmn 'data(property)' problem: Statement on line 2441: Could not convert undefined or null to object
 Backtrace:
   Line 2441 of linked script http://st.deviantart.com/css/chat.js/33.js
     var i = this.pclist.length;
   Line 2152 of linked script http://st.deviantart.com/css/chat.js/33.js
     this.members.Refresh();
   Line 1678 of linked script http://st.deviantart.com/css/chat.js/33.js
     dAmnChats[ns].onData(arg);
   Line 1558 of linked script http://st.deviantart.com/css/chat.js/33.js
     func(command, pkt);
   Line 339 of linked script http://st.deviantart.com/css/chat.js/33.js
     func(ar[i], i);
   Line 1558 of linked script http://st.deviantart.com/css/chat.js/33.js
     dAmn_arrayForEach(dAmn_Callbacks, (function (func)
 {
   func(command, pkt);
 }
 ));
   Line 1451 of linked script http://st.deviantart.com/css/chat.js/33.js
     dAmn_DoCommand(v.a, v.b);
   At unknown location
     [statement source code not available]