diff --git a/Grid/qcd/utils/A2Autils.h b/Grid/qcd/utils/A2Autils.h
index 11e00c49..b3914f33 100644
--- a/Grid/qcd/utils/A2Autils.h
+++ b/Grid/qcd/utils/A2Autils.h
@@ -134,8 +134,10 @@ void A2Autils<FImpl>::NucleonFieldMom(Eigen::Tensor<ComplexD,6> &mat,
   int twoBlock = mat.dimension(3);
   int threeBlock = mat.dimension(4);
 
-  GridBase *grid = wi[0]._grid;
-  
+  assert(0 && "Apologies, Felix, next line was causing compile failure");
+  //GridBase *grid = wi[0]._grid;
+  GridBase *grid = nullptr;
+
   const int    nd = grid->_ndimension;
   const int Nsimd = grid->Nsimd();
 
@@ -200,7 +202,9 @@ void A2Autils<FImpl>::NucleonFieldMom(Eigen::Tensor<ComplexD,6> &mat,
 
 	    
 	      // After getting the sitewise product do the mom phase loop
-	      int base = Nmom*i+Nmom*Lblock*j+Nmom*Lblock*Rblock*r;
+              assert(0 && "Apologies, Felix, next line was causing compile failure");
+              //int base = Nmom*i+Nmom*Lblock*j+Nmom*Lblock*Rblock*r;
+	      int base = 0;
 	      for ( int m=0;m<Nmom;m++){
 	        int idx = m+base;
 	        auto phase = mom[m]._odata[ss];
diff --git a/Grid/serialisation/BaseIO.h b/Grid/serialisation/BaseIO.h
index 09cd1181..289e7902 100644
--- a/Grid/serialisation/BaseIO.h
+++ b/Grid/serialisation/BaseIO.h
@@ -841,15 +841,10 @@ namespace Grid {
       // First check whether dimensions match (Eigen tensor library will assert if they don't match)
       bool bReturnValue = (T1::NumIndices == T2::NumIndices);
       for( auto i = 0 ; bReturnValue && i < T1::NumIndices ; i++ )
-          bReturnValue = ( lhs.dimension(i)) == rhs.dimension(i);
+          bReturnValue = ( lhs.dimension(i) == rhs.dimension(i) );
       if( bReturnValue ) {
-        using Traits = EigenIO::Traits<typename T1::Scalar>;
-        using scalar_type = typename Traits::scalar_type;
-        for_all( lhs, [&](scalar_type &c, typename T1::Index n, const std::array<size_t, T1::NumIndices + Traits::rank> &Dims ) {
-          scalar_type x = c - rhs[Dims];
-          if( x < 1e-10 )
-            bReturnValue = false;
-        } );
+        Eigen::Tensor<bool, 0, T1::Options> bResult = (lhs == rhs).all();
+        bReturnValue = bResult(0);
       }
       return bReturnValue;
     }
@@ -865,13 +860,13 @@ namespace Grid {
     }
 
     template <typename T>
-    static inline typename std::enable_if<!std::is_base_of<Eigen::TensorBase<T, Eigen::ReadOnlyAccessors>, T>::value, void>::type
+    static inline typename std::enable_if<!EigenIO::is_tensor<T>::value, void>::type
     WriteMember(std::ostream &os, const T &object) {
       os << object;
     }
     
     template <typename T>
-    static inline typename std::enable_if<std::is_base_of<Eigen::TensorBase<T, Eigen::ReadOnlyAccessors>, T>::value, void>::type
+    static inline typename std::enable_if<EigenIO::is_tensor<T>::value, void>::type
     WriteMember(std::ostream &os, const T &object) {
       os << "Eigen::Tensor";
     }