Compilation error during generate events in symmetry.o

Dear Developers,

I am using fresh instals of MadGraph 2.2.3 and 2.4.3 to generate events for the large process "u u~ > u u~ b b~ b b~ b b~" on a powerful computer (no cluster). While the initial steps work out fine (i.e. "generate u u~ > u u~ b b~ b b~ b b~" and "output my_proc"), I cannot create any events, beacuse "./bin/generate_events -f" gives the following compilation error:

MadGraph5Error : A compilation Error occurs when trying to compile /local/scratch/pbh1g14/MG5_aMC_v2_4_3/uu_uu6b/SubProcesses/P1_qq_qqbbxbbxbbx.
        The compilation fails with the following output message:
            gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -w -c symmetry.f -I../../Source/
            gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -w -c idenparts.f -I../../Source/
            gfortran: Internal error: Segmentation fault (program f951)
            Please submit a full bug report.
            See <http://bugzilla.redhat.com/bugzilla> for instructions.
            make: *** [symmetry.o] Error 1

In Madgraph 2.2.3, the error appears in matrix1.o instead of symmetry.o. I copied the debug.log for the 2.4.3 run below.
Do you have any idea why this i happening? I can create events for different processes, though - maybe it is because of the very large phase space?

Thank you very much in advance for your help.

Cheers,
Patrick

----------

The debug.log reads:
generate_events -f
Traceback (most recent call last):
  File "/local/scratch/pbh1g14/MG5_aMC_v2_4_3/uu_uu6b/bin/internal/extend
ed_cmd.py", line 1011, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/local/scratch/pbh1g14/MG5_aMC_v2_4_3/uu_uu6b/bin/internal/extend
ed_cmd.py", line 966, in onecmd_orig
    return func(arg, **opt)
  File "/local/scratch/pbh1g14/MG5_aMC_v2_4_3/uu_uu6b/bin/internal/madeve
nt_interface.py", line 1992, in do_generate_events
    postcmd=False)
  File "/local/scratch/pbh1g14/MG5_aMC_v2_4_3/uu_uu6b/bin/internal/extend
ed_cmd.py", line 1037, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/local/scratch/pbh1g14/MG5_aMC_v2_4_3/uu_uu6b/bin/internal/extend
ed_cmd.py", line 966, in onecmd_orig
    return func(arg, **opt)
  File "/local/scratch/pbh1g14/MG5_aMC_v2_4_3/uu_uu6b/bin/internal/madeve
nt_interface.py", line 2697, in do_survey
    jobs, P_zero_result = ajobcreator.launch()
  File "/local/scratch/pbh1g14/MG5_aMC_v2_4_3/uu_uu6b/bin/internal/gen_xi
mprove.py", line 143, in launch
    self.cmd.compile(['gensym'], cwd=Pdir)
  File "/local/scratch/pbh1g14/MG5_aMC_v2_4_3/uu_uu6b/bin/internal/extend
ed_cmd.py", line 1105, in compile
    return misc.compile(nb_core=self.options['nb_core'], *args, **opts)
  File "/local/scratch/pbh1g14/MG5_aMC_v2_4_3/uu_uu6b/bin/internal/misc.p
y", line 535, in compile
    raise MadGraph5Error, error_text
MadGraph5Error: A compilation Error occurs when trying to compile /local/
scratch/pbh1g14/MG5_aMC_v2_4_3/uu_uu6b/SubProcesses/P1_qq_qqbbxbbxbbx.
The compilation fails with the following output message:
    gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -w -c sym
metry.f -I../../Source/
    gfortran -O -w -fbounds-check -fPIC -ffixed-line-length-132 -w -c ide
nparts.f -I../../Source/
    gfortran: Internal error: Segmentation fault (program f951)
    Please submit a full bug report.
    See <http://bugzilla.redhat.com/bugzilla> for instructions.
    make: *** [symmetry.o] Error 1

Please try to fix this compilations issue and retry.
Help might be found at https://answers.launchpad.net/mg5amcnlo.
If you think that this is a bug, you can report this at https://bugs.laun
chpad.net/mg5amcnlo
                              Run Options
                              -----------
               stdout_level : None

                         MadEvent Options
                         ----------------
     automatic_html_opening : False (user set)
        notification_center : True
          cluster_temp_path : None
             cluster_memory : None
               cluster_size : 100
              cluster_queue : None
                    nb_core : 8 (user set)
               cluster_time : None
                   run_mode : 2

                      Configuration Options
                      ---------------------
                text_editor : None
         cluster_local_path : /cvmfs/cp3.uclouvain.be/madgraph/
      cluster_status_update : (600, 30)
               pythia8_path : None (user set)
                  hwpp_path : None (user set)
            pythia-pgs_path : None (user set)
                    td_path : None (user set)
               delphes_path : None (user set)
                thepeg_path : None (user set)
               cluster_type : condor
        exrootanalysis_path : None (user set)
                 eps_viewer : None
                web_browser : None
               syscalc_path : None (user set)
           madanalysis_path : None (user set)
                     lhapdf : lhapdf-config
              f2py_compiler : None
                 hepmc_path : None (user set)
         cluster_retry_wait : 300
           fortran_compiler : None
                auto_update : 7 (user set)
           cluster_nb_retry : 1
                    timeout : 60
               cpp_compiler : None