[FWTools] Ubuntu Linux, OpenEV Quits, Python Error

[Briefings]

I'm trying to learn how to use some mapping software and just downloaded
the latest version.  I'm running Ubuntu 6.06.  When I open OpenEv I get
the following errors:
bennybobw at wonderbread:~$ /home/bennybobw/fwtools/bin_safe/openev
Default software rendering mode (use -h if accelerated video card installed).
Gdk-WARNING **: Missing charsets in FontSet creation
Gdk-WARNING **:     JISX0208.1983-0
Gdk-WARNING **:     KSC5601.1987-0
Gdk-WARNING **:     GB2312.1980-0
Gdk-WARNING **:     JISX0201.1976-0

But the application runs.  However, when I try to open a .shp file, the
application quits and gives me this error:
/home/bennybobw/fwtools/bin/openev: line 25: 11185 Illegal instruction
${OPENEV_HOME}/bin/python ${OPENEV_HOME}/pymod/openev.py "$@"

Does anyone know how to resolve this?  Sorry if this has been answered
before.  I looked through previous posts and didn't see anything exactly
like it.  Thanks.