diff --git a/analyses/pluginBABAR/BABAR_2017_I1621593.cc b/analyses/pluginBABAR/BABAR_2017_I1621593.cc
--- a/analyses/pluginBABAR/BABAR_2017_I1621593.cc
+++ b/analyses/pluginBABAR/BABAR_2017_I1621593.cc
@@ -1,107 +1,107 @@
 // -*- C++ -*-
 #include "Rivet/Analysis.hh"
 #include "Rivet/Projections/UnstableParticles.hh"
 #include "Rivet/Projections/FinalState.hh"
 
 
 namespace Rivet {
 
 
   /// @brief Add a short analysis description here
   class BABAR_2017_I1621593 : public Analysis {
   public:
 
     /// Constructor
     DEFAULT_RIVET_ANALYSIS_CTOR(BABAR_2017_I1621593);
 
 
     /// @name Analysis methods
     //@{
 
     /// Book histograms and initialise projections before the run
     void init() {
 
       // Initialise and register projections
       declare(FinalState(), "FS");
       declare(UnstableParticles(), "UFS");
 
       book(_num4pi,   "TMP/num4");
       book(_numOmega, "TMP/numOmega");
       _mult.resize(2);
       book(_mult[0], 1, 1, 1);
       book(_mult[1], 2, 1, 1);
 
     }
 
 
     /// Perform the per-event analysis
     void analyze(const Event& event) {
       const FinalState& fs = apply<FinalState>(event, "FS");
 
       map<long,int> nCount;
       int ntotal(0);
       for (const Particle& p : fs.particles()) {
         nCount[p.pid()] += 1;
         ++ntotal;
       }
       if(ntotal!=4) vetoEvent;
       if(nCount[-211]==1&&nCount[211]==1&&nCount[111]==2) {
         _num4pi->fill();
         const FinalState& ufs = apply<FinalState>(event, "UFS");
         if (!ufs.particles(Cuts::pid==223).empty()) {
-          _numOmega->fill(event.weight());
+          _numOmega->fill();
         }
       }
 
     }
 
 
     /// Normalise histograms etc., after the run
     void finalize() {
 
       for(size_t ix=1;ix<3;++ix) {
         double sigma,error;
         if(ix==1) {
           sigma = _num4pi->val();
           error = _num4pi->err();
         }
         else {
           sigma = _numOmega->val();
           error = _numOmega->err();
         }
         sigma *= crossSection()/ sumOfWeights() /nanobarn;
         error *= crossSection()/ sumOfWeights() /nanobarn; 
         Scatter2D temphisto(refData(ix, 1, 1));
         for (size_t b = 0; b < temphisto.numPoints(); b++) {
           const double x  = temphisto.point(b).x();
           pair<double,double> ex = temphisto.point(b).xErrs();
           pair<double,double> ex2 = ex;
           if(ex2.first ==0.) ex2. first=0.0001;
           if(ex2.second==0.) ex2.second=0.0001;
           if (inRange(sqrtS()/GeV, x-ex2.first, x+ex2.second)) {
             _mult[ix-1]->addPoint(x, sigma, ex, make_pair(error,error));
           }
           else {
             _mult[ix-1]->addPoint(x, 0., ex, make_pair(0.,.0));
           }
         }
       }
     }
 
     //@}
 
     /// @name Histograms
     //@{
-    CounterPtr _num4pi;
+    CounterPtr _num4pi, _numOmega;
     vector<Scatter2DPtr> _mult;
     //@}
 
 
   };
 
 
   // The hook for the plugin system
   DECLARE_RIVET_PLUGIN(BABAR_2017_I1621593);
 
 
 }