maddm3.2 showing pythia showering errors while calculating the flux source and flux earth for DM indirect search

While calculating the flux for dm indirect search in the available models namely mssm, nmssm etc. we encounter pythia showering issues. We run the code by adopting both madevent and reshuffling methods. We found that sometimes the code for a particular parameter card runs successfully, however in the very next run with exactly the same card shows the following error.

 std::out_of_range in pythia8.log.

To note, we have installed pythia8 internally using the command maddm> install pythia8

For convenience, below we paste the relevant part of the Pythia log file of our run.

 -------- End PYTHIA Event Listing -----------------------------------------------------------------------------------------------

 Pythia::next(): 1000 events have been generated

 Pythia::next(): 2000 events have been generated

 Pythia::next(): 3000 events have been generated
 PYTHIA Warning in TauDecays::decay: maximum decay weight exceeded in tau decay

 Pythia::next(): 4000 events have been generated

 Pythia::next(): 5000 events have been generated

 Pythia::next(): 6000 events have been generated
terminate called after throwing an instance of 'std::out_of_range'
  what(): vector::_M_range_check: __n (which is 12) >= this->size() (which is 12)
/MG5_aMC_v2_9_9/mssmTest/Indirect_tree_cont/Events/run_03/run_shower.sh: line 2: 383462 Aborted (core dumped) /MG5_aMC_v2_9_9/mssmTest/bin/internal/main101