diff --git a/src/AFQMC/Estimators/EstimatorHandler.h b/src/AFQMC/Estimators/EstimatorHandler.h
index 775e08efc..526390953 100755
--- a/src/AFQMC/Estimators/EstimatorHandler.h
+++ b/src/AFQMC/Estimators/EstimatorHandler.h
@@ -106,6 +106,7 @@ class EstimatorHandler: public MPIObjectBase, public AFQMCInfo
       cur = cur->next;
     } 
 
+    return true;
   }
 
   // Estimator does not use TGs right now
@@ -129,6 +130,7 @@ class EstimatorHandler: public MPIObjectBase, public AFQMCInfo
     for(std::vector<EstimatorBase*>::iterator it=estimators.begin(); it!=estimators.end(); it++)
       (*it)->setup(TGdata,v,ham0,wfn0,LocalTimer,heads_comm,tg_comm,node_comm,head_tgs);
 
+    return true;
   }
 
   void setTargetWeight(RealType w0) { estimators[0]->setTargetWeight(w0); }
diff --git a/src/AFQMC/Hamiltonians/CCProjector.cpp b/src/AFQMC/Hamiltonians/CCProjector.cpp
index 2f5d15951..f78ea7cc1 100755
--- a/src/AFQMC/Hamiltonians/CCProjector.cpp
+++ b/src/AFQMC/Hamiltonians/CCProjector.cpp
@@ -56,11 +56,12 @@ namespace qmcplusplus
     sHam->initializeCCProjector(Pmat);
     for(int i=0; i<Pmat.rows(); i++) Pmat(i,i)=0.0;
   
+    return true;
   }
 
   bool CCProjector::initFromHDF5(const std::string& fileName)
   {
-
+    return false;
 /*
     hdf_archive dump(myComm);
     if(!dump.open(fileName,H5F_ACC_RDONLY,false)) {
diff --git a/src/AFQMC/Hamiltonians/CCProjector.h b/src/AFQMC/Hamiltonians/CCProjector.h
index 69c545fef..e97c6b624 100755
--- a/src/AFQMC/Hamiltonians/CCProjector.h
+++ b/src/AFQMC/Hamiltonians/CCProjector.h
@@ -60,9 +60,9 @@ class CCProjector: public ProjectorBase
   // P(i,j) == 0, P(i,j)==P(j,i)
   ComplexMatrix Pmat;
   
-  bool initFromASCII(const std::string& fileName) {}; 
+  bool initFromASCII(const std::string& fileName) {return true;}; 
 
-  bool initFromXML(const std::string& fileName) {};
+  bool initFromXML(const std::string& fileName) {return true;};
 
   bool initFromHDF5(const std::string& fileName); 
   
diff --git a/src/AFQMC/Hamiltonians/DDProjector.cpp b/src/AFQMC/Hamiltonians/DDProjector.cpp
index ecbe5ec1a..4a05444bf 100755
--- a/src/AFQMC/Hamiltonians/DDProjector.cpp
+++ b/src/AFQMC/Hamiltonians/DDProjector.cpp
@@ -39,12 +39,13 @@ namespace qmcplusplus
     // start by just setting to zero
     Pmat.resize(2*NMO,2*NMO); 
     Pmat=0;
-  
+    return true;
   }
 
   bool DDProjector::initFromHDF5(const std::string& fileName)
   {
 
+    return false;
 /*
     hdf_archive dump(myComm);
     if(!dump.open(fileName,H5F_ACC_RDONLY,false)) {
diff --git a/src/AFQMC/Hamiltonians/DDProjector.h b/src/AFQMC/Hamiltonians/DDProjector.h
index ae0b039e9..9dbd44c90 100755
--- a/src/AFQMC/Hamiltonians/DDProjector.h
+++ b/src/AFQMC/Hamiltonians/DDProjector.h
@@ -56,9 +56,9 @@ class DDProjector: public ProjectorBase
   // P(i,j) == 0, P(i,j)==P(j,i)
   ValueMatrix Pmat;
   
-  bool initFromASCII(const std::string& fileName) {}; 
+  bool initFromASCII(const std::string& fileName) {return true;}; 
 
-  bool initFromXML(const std::string& fileName) {};
+  bool initFromXML(const std::string& fileName) {return true;};
 
   bool initFromHDF5(const std::string& fileName); 
   
diff --git a/src/AFQMC/Hamiltonians/SparseGeneralHamiltonian.h b/src/AFQMC/Hamiltonians/SparseGeneralHamiltonian.h
index 955d60319..1151cf8f0 100755
--- a/src/AFQMC/Hamiltonians/SparseGeneralHamiltonian.h
+++ b/src/AFQMC/Hamiltonians/SparseGeneralHamiltonian.h
@@ -345,7 +345,7 @@ class SparseGeneralHamiltonian: public HamiltonianBase
        return false;
   } 
 
-  bool initFromXML(const std::string& fileName) {} 
+  bool initFromXML(const std::string& fileName) {return true;} 
 
   bool initFromHDF5(const std::string& fileName); 
 
@@ -531,15 +531,13 @@ class SparseGeneralHamiltonian: public HamiltonianBase
       APP_ABORT(" Error in mapUT_woD: This should not happen. \n");
     } else if(j > i)
       return N*i + j - (i*(i+1))/2 - i-1;
-    else
-      return N*j + i - (j*(j+1))/2 - j-1;
+    return N*j + i - (j*(j+1))/2 - j-1;
   }
 
   inline int mapUT(int i, int j, int N) {
     if(j >= i)
       return N*i + j - (i*(i+1))/2;
-    else
-      return N*j + i - (j*(j+1))/2;
+    return N*j + i - (j*(j+1))/2;
   }
 
   inline int mapUT_woD(int i, int j, int N) {
@@ -547,8 +545,7 @@ class SparseGeneralHamiltonian: public HamiltonianBase
       APP_ABORT(" Error in mapUT_woD: This should not happen. \n");
     } else if(j > i)
       return N*i + j - (i*(i+1))/2 - i-1;
-    else
-      return N*j + i - (j*(j+1))/2 - j-1;
+    return N*j + i - (j*(j+1))/2 - j-1;
   }
 
   bool communicate_Vijkl(ComplexSMSpMat&);
diff --git a/src/AFQMC/Propagators/phaseless_ImpSamp_ForceBias.cpp b/src/AFQMC/Propagators/phaseless_ImpSamp_ForceBias.cpp
index 4c89f6f26..ec51bb433 100755
--- a/src/AFQMC/Propagators/phaseless_ImpSamp_ForceBias.cpp
+++ b/src/AFQMC/Propagators/phaseless_ImpSamp_ForceBias.cpp
@@ -313,6 +313,7 @@ bool phaseless_ImpSamp_ForceBias::hdf_write(hdf_archive& dump,const std::string&
     return true;
   } 
  
+  return false;
 }
 
 bool phaseless_ImpSamp_ForceBias::hdf_read(hdf_archive& dump,const std::string& tag)
diff --git a/src/AFQMC/Wavefunctions/GeneralSingleDeterminant.h b/src/AFQMC/Wavefunctions/GeneralSingleDeterminant.h
index 8d265513e..17027347a 100755
--- a/src/AFQMC/Wavefunctions/GeneralSingleDeterminant.h
+++ b/src/AFQMC/Wavefunctions/GeneralSingleDeterminant.h
@@ -110,7 +110,7 @@ class GeneralSingleDeterminant: public WavefunctionBase
   
     bool initFromAscii(std::string fileName); 
     bool initFromHDF5(hdf_archive&,const std::string&); 
-    bool initFromXML(std::string fileName) {} 
+    bool initFromXML(std::string fileName) {return true;} 
 
     bool getHamiltonian(HamPtr ); 
 
diff --git a/src/AFQMC/Wavefunctions/MultiPureSingleDeterminant.cpp b/src/AFQMC/Wavefunctions/MultiPureSingleDeterminant.cpp
index 98004c256..43be07e71 100755
--- a/src/AFQMC/Wavefunctions/MultiPureSingleDeterminant.cpp
+++ b/src/AFQMC/Wavefunctions/MultiPureSingleDeterminant.cpp
@@ -468,6 +468,7 @@ bool MultiPureSingleDeterminant::initFromAscii(std::string fileName)
   // calculate relations between determinants
   // setup necessary data structures for low-rank updates
 
+  return true;
 }
 
 bool MultiPureSingleDeterminant::getHamiltonian(HamPtr h)
@@ -635,10 +636,10 @@ bool MultiPureSingleDeterminant::getHamiltonian(HamPtr h)
 }
 
 bool MultiPureSingleDeterminant::hdf_write(hdf_archive& read, const std::string& tag, bool include_tensors) 
-{}
+{return true;}
 
 bool MultiPureSingleDeterminant::hdf_write()
-{}
+{return true;}
 
 void MultiPureSingleDeterminant::local_evaluateOneBodyMixedDensityMatrixFull(const ComplexType* SlaterMat, ComplexType& ovl, ComplexMatrix& dm, bool full)
 {
diff --git a/src/AFQMC/Wavefunctions/MultiPureSingleDeterminant.h b/src/AFQMC/Wavefunctions/MultiPureSingleDeterminant.h
index bb3ba9dd3..19f7f344c 100755
--- a/src/AFQMC/Wavefunctions/MultiPureSingleDeterminant.h
+++ b/src/AFQMC/Wavefunctions/MultiPureSingleDeterminant.h
@@ -119,8 +119,8 @@ class MultiPureSingleDeterminant: public WavefunctionBase
     double IterCI_cut; 
 
     bool initFromAscii(std::string fileName);
-    bool initFromHDF5(hdf_archive&,const std::string&) {}
-    bool initFromXML(std::string fileName) {}
+    bool initFromHDF5(hdf_archive&,const std::string&) {return true;}
+    bool initFromXML(std::string fileName) {return true;}
 
 
     bool getHamiltonian(HamPtr ); 
diff --git a/src/AFQMC/Wavefunctions/PureSingleDeterminant.h b/src/AFQMC/Wavefunctions/PureSingleDeterminant.h
index b355cf1e0..05d0677aa 100755
--- a/src/AFQMC/Wavefunctions/PureSingleDeterminant.h
+++ b/src/AFQMC/Wavefunctions/PureSingleDeterminant.h
@@ -108,7 +108,7 @@ class PureSingleDeterminant: public WavefunctionBase
   
     bool initFromAscii(std::string fileName); 
     bool initFromHDF5(hdf_archive&,const std::string&); 
-    bool initFromXML(std::string fileName) {} 
+    bool initFromXML(std::string fileName) {return true;} 
 
     bool getHamiltonian(HamPtr ); 
 
diff --git a/src/AFQMC/Wavefunctions/WavefunctionBase.h b/src/AFQMC/Wavefunctions/WavefunctionBase.h
index 56329c99f..73bb4b4a4 100755
--- a/src/AFQMC/Wavefunctions/WavefunctionBase.h
+++ b/src/AFQMC/Wavefunctions/WavefunctionBase.h
@@ -95,6 +95,7 @@ class WavefunctionBase: public MPIObjectBase, public AFQMCInfo
     virtual int sizeOfInfoForDistributedPropagation() 
     {  
       APP_ABORT("WavefunctionBase::sizeOfInfoForDistributedPropagation() not implemented for this wavefunction type. \n");
+      return 0;
     }
 
     virtual void calculateMeanFieldMatrixElementOfOneBodyOperators(bool addBetaBeta, ComplexSpMat&, std::vector<ComplexType>& v, const int n=-1 )=0;
diff --git a/src/AFQMC/Wavefunctions/WavefunctionHandler.h b/src/AFQMC/Wavefunctions/WavefunctionHandler.h
index 1096345e2..7e33480ed 100755
--- a/src/AFQMC/Wavefunctions/WavefunctionHandler.h
+++ b/src/AFQMC/Wavefunctions/WavefunctionHandler.h
@@ -306,6 +306,7 @@ class WavefunctionHandler: public MPIObjectBase, public AFQMCInfo
       } else {
         APP_ABORT("Unknown wavefunction type in isOccupAlpha. \n");
       }
+      return false;
     } 
  
     bool isOccupBeta( const std::string& type, int i) {
@@ -320,6 +321,7 @@ class WavefunctionHandler: public MPIObjectBase, public AFQMCInfo
       } else {
         APP_ABORT("Unknown wavefunction type in isOccupBeta. \n");
       }
+      return false;
     }
 
     bool check_initialized(const std::string& type)