[X2Go-User] 'Connection failed sh: 1: Syntax error: "(" unexpected'

I received the following error message while attempting to connect:

Connection failed sh: 1: Syntax error: "(" unexpected

x2go had been working correctly. I assume that some shell script got corrupted. Does anyone know what shells script get calls when x2go connects? The error appears in a popup window in the x2go client.

thanks

PS my configuration is

Server:

Debian wheezy
xfce4
x2goserver 4.0.1.3-0

Client:

OS X 10.7.5
MacPorts x2goclient.app 4.0.1.0