Could not find cross-section and event number information in Pythia8 log

I have a problem with MadGraph 2.5.2 with Pythia8:
Merging results from the split PY8 runs...
Command "generate_events SMS-GlGl_onejet_T1bbbb_1500_100 --multicore -f" interrupted with error:
InvalidCmd : Could not find cross-section and event number information in Pythia8 log
   '/home/jory/bin/MG5_aMC_v2_5_2/SMS-GlGl_onejet/Events/SMS-GlGl_onejet_T1bbbb_1500_100/PY8_parallelization/split_1/PY8_log.txt'.
quit

No hepmc file is made.
The log file shown is empty.
Do you know what the problem is?

My pythia8 settings are:

! ==================
! General parameters
! ==================
!
Main:numberOfEvents = -1

HEPMCoutput:file = auto

!
! For all merging schemes, decide wehter you want the merging scale
! variation computed for only the central weights or all other
! PDF and scale variation weights as well
SysCalc:fullCutVariation = off

Tune:preferLHAPDF = 2
Main:timesAllowErrors = 10000
Check:epTolErr = 0.01
Beams:setProductionScalesFromLHEF = off
SLHA:keepSM = on
SLHA:minMassSM = 1000.
ParticleDecays:limitTau0 = on
ParticleDecays:tau0Max = 10
ParticleDecays:allowPhotonRadiation = on

! pythia8CUEP8M1Settings
! Tune:pp 14
! Tune:ee 7
MultipartonInteractions:pT0Ref=2.4024
MultipartonInteractions:ecmPow=0.25208
MultipartonInteractions:expPow=1.6

! Matching settings:
JetMatching:setMad = off
JetMatching:scheme = 1
JetMatching:merge = on
JetMatching:jetAlgorithm = 2
JetMatching:etaJetMax = 5.
JetMatching:coneRadius = 1.
JetMatching:slowJetPower = 1
! qCut values for mgo masses of:
! 1000, 1200, 1400, 1500
! 140, 143, 147, 150
! see T1*_fragment.py
JetMatching:qCut = 150
JetMatching:nQmatch = 5
! Only one unlike cms since I radiate only 1 extra jet
JetMatching:nJetMax = 1
JetMatching:doShowerKt = off
6:m0 = 172.5
Check:abortIfVeto = on
partonlevel:mpi = off