Crash when automatically calculating widths in Pseudoscalar_2HDM model

Hi,

MG5_aMC is crashing when automatically calculation widths using the Pseudoscalar_2HDM model (*):

Command "generate_events run_01" interrupted in sub-command:
"set max_npoint_for_channel 0" with error:
KeyError : 2

Versions 2.8.1 and 2.8.2 seem to be affected, the same thing used to work in 2.6.7.
We are using python2.

We are essentially calling:
> import model Pseudoscalar_2HDM-bbMET_5FS --modelname
> generate p p > t t~ #doesn't really matter
> output test
> launch
> done
> set Wh1 auto
> set Wh2 auto
> set Wh3 auto
> set Wh4 auto
> done

I've copied the MG5_debug at the bottom of this message (there is also a ME5_debug file which is empty).

Any help with this would be appreciated.

Cheers,
Hannes

*) https://github.com/LHC-DMWG/model-repository/tree/master/models/Pseudoscalar_2HDM

---MG5_debug.log---

#************************************************************
#* MadGraph5_aMC@NLO *
#* *
#* * * *
#* * * * * *
#* * * * * 5 * * * * *
#* * * * * *
#* * * *
#* *
#* *
#* VERSION 2.8.2 2020-10-30 *
#* *
#* The MadGraph5_aMC@NLO Development Team - Find us at *
#* https://server06.fynu.ucl.ac.be/projects/madgraph *
#* *
#************************************************************
#* *
#* Command File for MadGraph5_aMC@NLO *
#* *
#* run as ./bin/mg5_aMC filename *
#* *
#************************************************************
set group_subprocesses Auto
set ignore_six_quark_processes False
set max_t_for_channel 99
set loop_optimized_output True
set low_mem_multicore_nlo_generation False
set default_unset_couplings 99
set zerowidth_tchannel True
set loop_color_flows False
set gauge unitary
set complex_mass_scheme False
set max_npoint_for_channel 0
Traceback (most recent call last):
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/extended_cmd.py", line 1541, in onecmd
    return self.onecmd_orig(line, **opt)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/extended_cmd.py", line 1490, in onecmd_orig
    return func(arg, **opt)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/madevent_interface.py", line 2463, in do_generate_events
    switch_mode = self.ask_run_configuration(mode, args)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/madevent_interface.py", line 6234, in ask_run_configuration
    self.ask_edit_cards(cards, plot=False, first_cmd=first_cmd)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/common_run_interface.py", line 982, in ask_edit_cards
    banner=banner)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/common_run_interface.py", line 1054, in ask_edit_card_static
    cards=cards, mode=mode, **opt)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/extended_cmd.py", line 1150, in ask
    fct=question_instance, fct_timeout=fct_timeout)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/extended_cmd.py", line 1755, in timed_input
    result = fct(question)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/extended_cmd.py", line 2118, in __call__
    return self.cmdloop()
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/extended_cmd.py", line 2286, in cmdloop
    super(SmartQuestion,self).cmdloop(intro)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/extended_cmd.py", line 179, in cmdloop
    stop = self.postcmd(stop, line)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/common_run_interface.py", line 6081, in postcmd
    self.do_update('dependent', timer=20)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/common_run_interface.py", line 6127, in do_update
    self.do_compute_widths('')
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/common_run_interface.py", line 6498, in do_compute_widths
    out = self.mother_interface.do_compute_widths(line)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/common_run_interface.py", line 2318, in do_compute_widths
    out = cmd.exec_cmd(line, model=opts['model'])
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/extended_cmd.py", line 1570, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/extended_cmd.py", line 1490, in onecmd_orig
    return func(arg, **opt)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/master_interface.py", line 346, in do_compute_widths
    return self.cmd.do_compute_widths(self, *args, **opts)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/madgraph_interface.py", line 8500, in do_compute_widths
    self.exec_cmd('output madevent %s -f' % decay_dir,child=False)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/extended_cmd.py", line 1570, in exec_cmd
    stop = Cmd.onecmd_orig(current_interface, line, **opt)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/extended_cmd.py", line 1490, in onecmd_orig
    return func(arg, **opt)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/master_interface.py", line 299, in do_output
    self.cmd.do_output(self, line, *args, **opts)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/madgraph_interface.py", line 7993, in do_output
    self.export(nojpeg, main_file_name, group_processes, args)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/master_interface.py", line 313, in export
    return self.cmd.export(self, *args, **opts)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/madgraph_interface.py", line 8123, in export
    ndiags, cpu_time = generate_matrix_elements(self,group_processes)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/interface/madgraph_interface.py", line 8105, in generate_matrix_elements
    matrix_element_opts=mode)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/core/helas_objects.py", line 5588, in __init__
    compute_loop_nc = compute_loop_nc))
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/core/helas_objects.py", line 5815, in generate_matrix_elements
    amplitude_tag = IdentifyMETag.create_tag(amplitude)
  File "/home/hmildner/HEP/MG5_aMC_v2_8_2/madgraph/core/helas_objects.py", line 117, in create_tag
    for p in sorted_tags[1:]]
KeyError: 2
                          MadGraph5_aMC@NLO Options
                          ----------------
        complex_mass_scheme : False
    default_unset_couplings : 99 (user set)
                      gauge : unitary
         group_subprocesses : Auto
  ignore_six_quark_processes : False
           loop_color_flows : False
      loop_optimized_output : True
  low_mem_multicore_nlo_generation : False
     max_npoint_for_channel : 0 (user set)
          max_t_for_channel : 99 (user set)
               stdout_level : 20 (user set)
         zerowidth_tchannel : True

                         MadEvent Options
                          ----------------
     automatic_html_opening : False (user set)
                    nb_core : 4 (user set)
        notification_center : True
                   run_mode : 2

                      Configuration Options
                      ---------------------
                        OLP : MadLoop
                    amcfast : amcfast-config
                   applgrid : applgrid-config
                auto_update : 7 (user set)
         cluster_local_path : None
           cluster_nb_retry : 1
              cluster_queue : None (user set)
         cluster_retry_wait : 300
               cluster_size : 100
      cluster_status_update : (600, 30)
          cluster_temp_path : None
               cluster_type : condor
                    collier : ./HEPTools/lib
               cpp_compiler : None
             crash_on_error : False
               delphes_path : None (user set)
                 eps_viewer : None
        exrootanalysis_path : None (user set)
              f2py_compiler : None
          f2py_compiler_py2 : None
          f2py_compiler_py3 : None
                    fastjet : fastjet-config
           fortran_compiler : None
                      golem : None (user set)
                 hepmc_path : None (user set)
                  hwpp_path : None (user set)
                     lhapdf : lhapdf-config
                 lhapdf_py2 : None
                 lhapdf_py3 : None
          madanalysis5_path : None (user set)
           madanalysis_path : None (user set)
  mg5amc_py8_interface_path : None (user set)
                      ninja : ./HEPTools/lib
        output_dependencies : external
            pythia-pgs_path : None (user set)
               pythia8_path : None (user set)
                    samurai : None
               syscalc_path : None (user set)
                    td_path : None (user set)
                text_editor : emacs (user set)
                thepeg_path : None (user set)
                    timeout : 60
                web_browser : None