I have installed IBC on my Ubuntu computer, downloaded the newer IBC.jar and version files, and followed the instructions on setting the basic (default) parameters in the config.ini and 1022 version number in gatewaystart.sh and twsstart.sh. Unfortunately does it not start: when executing from a command prompt I get an error message: "line 233: xterm: command not found" I get this for both gatewaystart and twsstart. What am I doing wrong?