LispWorks 5.1 for FreeBSD requires that the X11 release 6 (or higher) OpenMotif (version 2.2 or higher) are installed on your machine. Install Open Motif 2.2.x from the FreeBSD ports tree. Your systems administrator may be able to help if you do not know how to do this.
Note: In order for the LispWorks IDE to run "out of the box", Motif must be installed on the target machine.