BX PRO 6.0 is only compatible with Open Motif 2.1. If you are running Red Hat 7.3, the default version of Open Motif is 2.2. You need to install the Open Motif 2.1 compatibility library that can be found elsewhere on the Red Hat 7.3 distribution. If you cannot find it, and you have a CD based evaluation, then you can use the RPMs found on the CD at: /ome-compat/ (alternatively, they may exist at: /bxe6lin/ome-rpms/) If you downloaded your eval, see the suggested sources for Open Motif provided in the next question.

BX PRO 6.1 is compatible with Open Motif 2.2 on Red Hat 7.3+ and is configured to use Open Motif 2.1 on Red Hat systems prior to Red Hat 7.3. If you have change Open Motif versions, make sure that you install a compatible version of BX PRO.