visa.NS does not see termination character

Due to our remote test controllers running Windows XP, and the instrument being controlled has no Win7 drivers, I am writing x86 code on an XP machine.

I am attempting to control an instument using TCPIP/Socket

Outgoing commands work. But, I am getting a timeout when reading or query.

Telnet works as does NI-MAX

I am writing in VS2005 using visa.NS message based (mbsession)

mbsession.TerminationCharacterEnabled = true;

mbsession.TerminationCharacter = 13;

Have tried both orders...

NI-VISA 5.3

Thanks