Mozilla won't run

[David Lawrence]

I downloaded and installed release M18 on a Red Hat 7 system.
When I tried to run using ./mozilla command from the
/mozilla/package directory, I got following:

./run-mozilla.sh ./mozilla-bin
MOZILLA_FIVE_HOME=.
       LD_LIBRARY_PATH=.
               LIBRARY_PATH=.:./components
                    SHLIB_PATH=.
                            LIB_PATH=.
                    ADDON_PATH=.
                  MOZ_PROGRAM=./mozilla-bin
                  MOZ_TOOLKIT=
                         moz-debug=0
                   moz-debugger=
./run-mozilla.sh:  line 72:  5687 segmentation fault  $prog
${1+"$@"}

Also, in the message log I found:   localhost   modprobe:  Can't
locate module net-pf-10

Since there are plenty of people who have sucessfully downloaded,
installed and run Mozilla, this problem obviously reflects my own
imcompetence rather than a bug.  But if anyone out there has a
clue it would be very much appreciated.