OS X/Messages.app - Closing connection due to exception in session

Hi

Openfire 4.1.3

Client: OS X/Messages.app

Any attempt to connect from IM client (OS X/Messages.app) disconnects immediately - right after being seemingly successfully connected on GUI.

client log:

imagent[360]: [Warning] XMPPConnection: Error: Error Domain=LibXML2ErrorDomain Code=5 “(null)”

imagent[360]: [Warning] XMPPConnection: Error: Error Domain=LibXML2ErrorDomain Code=5 “(null)”

server log:

WARN [socket_c2s-thread-15]: org.jivesoftware.openfire.nio.ConnectionHandler - Closing connection due to exception in session: (0x00001143: nio socket, server, /clientip:64021 => /serverip:5222)

java.io.IOException: Closing session that seems to be stalled. Preventing OOM

Please advice