No such file or directory: /Users/test/nlo2/MCatNLO/RUN_PYTHIA8_2/events.hepmc.gz

Hello,

here is my summary:

      Process p p > l+ vl [QCD] @0 ; p p > l- vl~ [QCD] @1 ; p p > l+ vl j [QCD] @2 ; p p > l- vl~ j [QCD] @3
      Run at p-p collider (50000.0 + 50000.0 GeV)
      Number of events generated: 50
      Total cross section: 1.570e+05 +- 2.9e+03 pb

INFO: The /Users/test/nlo2/Events/run_02/events.lhe.gz file has been generated. / generates events.lhe file...

Events gerated succesfully but when pythia8 works for showering and merging..

INFO: Preparing MCatNLO run
INFO: Using LHAPDF v6.2.1 interface for PDFs
INFO: Compiling MCatNLO for PYTHIA8...
INFO: ... done
INFO: Showering events...
INFO: (Running in /Users/test/nlo2/MCatNLO/RUN_PYTHIA8_2)
INFO: Idle: 0, Running: 1, Completed: 0 [ current time: 15h59 ]
/Users/test/nlo2/MCatNLO/RUN_PYTHIA8_2/shower.sh: line 41: 7263 Abort trap: 6 ./Pythia8.exe Pythia8.cmd > mcatnlo_run.log 2>&1

mv: rename Pythia8.hep to events.hepmc: No such file or directory

gzip: can't stat: events.hepmc (events.hepmc): No such file or directory

INFO: Idle: 0, Running: 0, Completed: 1 [ 0.048s ]
INFO: Idle: 0, Running: 0, Completed: 0 [ current time: 15h59 ]

ERROR::

Command "launch auto " interrupted with error:
IOError : [Errno 2] No such file or directory: '/Users/test/nlo2/MCatNLO/RUN_PYTHIA8_2/events.hepmc.gz' // but trying to find hepmc file..

Please report this bug on https://bugs.launchpad.net/mg5amcnlo
More information is found in '/Users/test/nlo2/run_02_tag_1_debug.log'.
Please attach this file to your report.

What do you think?
is that problem about pythia8 & main82.cc sample or it is about MG?

Thank you.