I have an x2go client-server configuration that works perfectly except the that the letter lowercase 'p' does not appear when typed. Can someone tell my how to remap a single key?

Here's my configuration:

Server:

Debian wheezy
xfce4
x2goserver 4.0.1.3-0

Client:

OS X 10.7.5
MacPorts x2goclient.app 4.0.1.0

thanks