diff --git a/GeneratorInterface/ExternalDecays/interface/TauSpinnerCMS.h b/GeneratorInterface/ExternalDecays/interface/TauSpinnerCMS.h
index e65d8b8cc53cf..11ddf00f18bbd 100755
--- a/GeneratorInterface/ExternalDecays/interface/TauSpinnerCMS.h
+++ b/GeneratorInterface/ExternalDecays/interface/TauSpinnerCMS.h
@@ -33,7 +33,6 @@
 #include "TauSpinner/SimpleParticle.h"
 
 using namespace edm;
-using namespace std;
 using namespace TauSpinner;
 
 class TauSpinnerCMS : public edm::EDProducer
@@ -55,7 +54,7 @@ class TauSpinnerCMS : public edm::EDProducer
   bool isReco_;
   bool isTauolaConfigured_;
   bool isLHPDFConfigured_;
-  string LHAPDFname_;
+  std::string LHAPDFname_;
   double CMSEnergy_;
   edm::InputTag gensrc_;
   int MotherPDGID_,Ipol_,nonSM2_,nonSMN_;
diff --git a/GeneratorInterface/ExternalDecays/interface/read_particles_from_HepMC.h b/GeneratorInterface/ExternalDecays/interface/read_particles_from_HepMC.h
index 2db8393a8dd21..15f81ae393ee7 100644
--- a/GeneratorInterface/ExternalDecays/interface/read_particles_from_HepMC.h
+++ b/GeneratorInterface/ExternalDecays/interface/read_particles_from_HepMC.h
@@ -8,7 +8,6 @@
 
 #include "TauSpinner/SimpleParticle.h"
 #include <vector>
-using namespace std;
 using namespace TauSpinner;
  
 /** Read HepMC::GenEvent.
@@ -29,12 +28,12 @@ using namespace TauSpinner;
   0 - event processed correctly 
   1 - empty event or no decay found in the event
 */
-int readParticlesFromHepMC(const HepMC::GenEvent *event, SimpleParticle &X, SimpleParticle &tau, SimpleParticle &tau2, vector<SimpleParticle> &tau_daughters, vector<SimpleParticle> &tau2_daughters);
+int readParticlesFromHepMC(const HepMC::GenEvent *event, SimpleParticle &X, SimpleParticle &tau, SimpleParticle &tau2, std::vector<SimpleParticle> &tau_daughters, std::vector<SimpleParticle> &tau2_daughters);
 
 /** Get daughters of HepMC::GenParticle
 
   Recursively searches for final-state daughters of 'x' */
-vector<SimpleParticle> *getDaughters(HepMC::GenParticle *x);
+std::vector<SimpleParticle> *getDaughters(HepMC::GenParticle *x);
 
 /** Find last self
 
diff --git a/GeneratorInterface/ExternalDecays/plugins/TauSpinnerCMS.cc b/GeneratorInterface/ExternalDecays/plugins/TauSpinnerCMS.cc
index 41d8f44d544e9..3f70723f7f87b 100755
--- a/GeneratorInterface/ExternalDecays/plugins/TauSpinnerCMS.cc
+++ b/GeneratorInterface/ExternalDecays/plugins/TauSpinnerCMS.cc
@@ -53,7 +53,7 @@ void TauSpinnerCMS::produce( edm::Event& e, const edm::EventSetup& iSetup){
   double WTFlip=1.0;
   double polSM=-999; //range [-1,1]
   SimpleParticle X, tau, tau2;
-  vector<SimpleParticle> tau_daughters, tau_daughters2;
+  std::vector<SimpleParticle> tau_daughters, tau_daughters2;
   int stat(0);
   if(isReco_){
     stat=readParticlesfromReco(e,X,tau,tau2,tau_daughters,tau_daughters2);
diff --git a/GeneratorInterface/ExternalDecays/src/read_particles_from_HepMC.cc b/GeneratorInterface/ExternalDecays/src/read_particles_from_HepMC.cc
index 5d68ec2b6724f..fc89fef23be5b 100644
--- a/GeneratorInterface/ExternalDecays/src/read_particles_from_HepMC.cc
+++ b/GeneratorInterface/ExternalDecays/src/read_particles_from_HepMC.cc
@@ -1,13 +1,14 @@
 #include "GeneratorInterface/ExternalDecays/interface/read_particles_from_HepMC.h"
+#include "FWCore/MessageLogger/interface/MessageLogger.h"
 
 /*******************************************************************************
   Get daughters of HepMC::GenParticle
 
   Recursively searches for final-state daughters of 'x'
 *******************************************************************************/
-inline vector<SimpleParticle> *getDaughters(HepMC::GenParticle *x)
+inline std::vector<SimpleParticle> *getDaughters(HepMC::GenParticle *x)
 {
-  vector<SimpleParticle> *daughters = new vector<SimpleParticle>();
+  std::vector<SimpleParticle> *daughters = new std::vector<SimpleParticle>();
   if(!x->end_vertex()) return daughters;
 
   // Check decay products of 'x'
@@ -20,7 +21,7 @@ inline vector<SimpleParticle> *getDaughters(HepMC::GenParticle *x)
     // all of its daughters.
     if( pp->end_vertex() && pp->pdg_id()!=111)
     {
-      vector<SimpleParticle> *sub_daughters = getDaughters(pp);
+      std::vector<SimpleParticle> *sub_daughters = getDaughters(pp);
       daughters->insert(daughters->end(),sub_daughters->begin(),sub_daughters->end());
       
       delete sub_daughters;
@@ -84,7 +85,7 @@ inline bool isFirst(HepMC::GenParticle *x){
       Event will continue to be processed
       with next function call. 
 *******************************************************************************/
-int readParticlesFromHepMC(const HepMC::GenEvent *event, SimpleParticle &X, SimpleParticle &tau, SimpleParticle &tau2, vector<SimpleParticle> &tau_daughters, vector<SimpleParticle> &tau2_daughters)
+int readParticlesFromHepMC(const HepMC::GenEvent *event, SimpleParticle &X, SimpleParticle &tau, SimpleParticle &tau2, std::vector<SimpleParticle> &tau_daughters, std::vector<SimpleParticle> &tau2_daughters)
 {
   if(event==NULL) return 1;
 
@@ -118,7 +119,8 @@ int readParticlesFromHepMC(const HepMC::GenEvent *event, SimpleParticle &X, Simp
           else if(!hTau2) hTau2 = *it2;
           else
           {
-            cout<<"TauSpiner: three taus in one decay"<<endl;
+	    edm::LogInfo("TauSpinnerCMSSW::read_particles_from_HepMC") << "TauSpiner: three taus in one decay" << std::endl;
+	    //std::cout<<"TauSpiner: three taus in one decay"<<std::endl;
             return 1;
           }
         }
@@ -127,7 +129,9 @@ int readParticlesFromHepMC(const HepMC::GenEvent *event, SimpleParticle &X, Simp
           if(!hTau2) hTau2 = *it2;
           else
           {
-            cout<<"TauSpiner: two neutrinos or two taus and neutrino in one decay"<<endl; 
+	    edm::LogInfo("TauSpinnerCMSSW::read_particles_from_HepMC") << "TauSpiner: two neutrinos or two taus and neutrino in one decay" 
+								       << std::endl;
+            //std::cout<<"TauSpiner: two neutrinos or two taus and neutrino in one decay"<<std::endl; 
             return 1;
           }
         }
@@ -141,7 +145,8 @@ int readParticlesFromHepMC(const HepMC::GenEvent *event, SimpleParticle &X, Simp
 
   if(!hTau || !hTau2)
   {
-    //cout<<"TauSpiner: boson found but no proper tau pair or tau + neutrino found."<<endl;
+    //edm::LogInfo("TauSpinnerCMSSW::read_particles_from_HepMC") << "TauSpiner: boson found but no proper tau pair or tau + neutrino found."<<std::endl;
+    //std::cout<<"TauSpiner: boson found but no proper tau pair or tau + neutrino found."<<std::endl;
     return 1;
   }
 
@@ -169,7 +174,7 @@ int readParticlesFromHepMC(const HepMC::GenEvent *event, SimpleParticle &X, Simp
   tau2.setPdgid(hTau2->pdg_id());
 
   // Create list of tau daughters
-  vector<SimpleParticle> *buf = getDaughters(hTau);
+  std::vector<SimpleParticle> *buf = getDaughters(hTau);
   tau_daughters.clear();
   tau_daughters.insert(tau_daughters.end(),buf->begin(),buf->end());