THis version of SeqPup is compiled for Sun SOlaris 2 on an Intel 80x86 processor. It requires a system that include Motif XWindow libraries, which come as part of Solaris 2.4 (in /usr/dt/lib), but are not standard parts of earlier Solaris. If you do have motif, you may still need to tell the system where it is, with a statement like this: setenv LD_LIBRARY_PATH /usr/dt/lib:/usr/lib:/usr/openwin/lib