generate_events with error

Hello,

       I want to produce the processes:
           p p > a @1
           p p > a j @2
      with pythia and delphes. (I have set the value of xqcut and qcut).

      But there are some errors:

    Command "generate_events " interrupted in sub-command:
   "generate_events" with error:
    ValueError : need more than 1 value to unpack.

  More information was found in run_01_aj_debug.log:
   generate_events
Traceback (most recent call last):
  File "/home/**/MadGraph5_v1_5_5/***/bin/internal/extended_cmd.py", line 815, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/home/**/MadGraph5_v1_5_5/***/bin/internal/extended_cmd.py", line 808, in onecmd_orig
    return func(arg, **opt)
  File "/home/**/MadGraph5_v1_5_5/***/bin/internal/madevent_interface.py", line 2128, in do_generate_events
    self.exec_cmd('refine %s' % nb_event, postcmd=False)
  File "/home/**/MadGraph5_v1_5_5/***/bin/internal/extended_cmd.py", line 855, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/home/**/MadGraph5_v1_5_5/***/bin/internal/extended_cmd.py", line 808, in onecmd_orig
    return func(arg, **opt)
  File "/home/**/MadGraph5_v1_5_5/***/bin/internal/madevent_interface.py", line 2588, in do_refine
    cross, error = sum_html.make_all_html_results(self)
  File "/home/**/MadGraph5_v1_5_5/***/bin/internal/sum_html.py", line 387, in make_all_html_results
    P_comb.write_results_dat(pjoin(P_path, '%s_results.dat' % run))
  File "/home/**/MadGraph5_v1_5_5/***/bin/internal/sum_html.py", line 305, in write_results_dat
    line = '%s %s %s %i %i %i %i %s %s %s\n' % (fstr(self.axsec), fstr(self.xerru),
  File "/home/**/MadGraph5_v1_5_5/***/bin/internal/sum_html.py", line 300, in fstr
    nb, power = data.split('E')
ValueError: need more than 1 value to unpack.

Cheers
Violin