diff --git a/Eigen/src/SparseLU/SparseLUBase.h b/Eigen/src/SparseLU/SparseLUBase.h
index c00bc0532..bf6bf0505 100644
--- a/Eigen/src/SparseLU/SparseLUBase.h
+++ b/Eigen/src/SparseLU/SparseLUBase.h
@@ -17,10 +17,8 @@ struct SparseLUBase
   typedef Matrix<Scalar,Dynamic,1> ScalarVector;
   typedef Matrix<Index,Dynamic,1> IndexVector; 
   typedef typename ScalarVector::RealScalar RealScalar; 
-  typedef VectorBlock<Matrix<Scalar,Dynamic,1> > BlockScalarVector;
-  typedef VectorBlock<Matrix<Index,Dynamic,1> > BlockIndexVector;
-//   typedef Ref<Matrix<Scalar,Dynamic,1> > BlockScalarVector;
-//   typedef Ref<Matrix<Index,Dynamic,1> > BlockIndexVector;
+  typedef Ref<Matrix<Scalar,Dynamic,1> > BlockScalarVector;
+  typedef Ref<Matrix<Index,Dynamic,1> > BlockIndexVector;
   typedef LU_GlobalLU_t<IndexVector, ScalarVector> GlobalLU_t; 
   typedef SparseMatrix<Scalar,ColMajor,Index> MatrixType; 
   
@@ -46,10 +44,10 @@ struct SparseLUBase
   static void LU_panel_dfs(const int m, const int w, const int jcol, MatrixType& A, IndexVector& perm_r, int& nseg, ScalarVector& dense, IndexVector& panel_lsub, IndexVector& segrep, IndexVector& repfnz, IndexVector& xprune, IndexVector& marker, IndexVector& parent, IndexVector& xplore, GlobalLU_t& glu);
    
   static void LU_panel_bmod(const int m, const int w, const int jcol, const int nseg, ScalarVector& dense, ScalarVector& tempv, IndexVector& segrep, IndexVector& repfnz, LU_perfvalues& perfv, GlobalLU_t& glu);
-  static int LU_column_dfs(const int m, const int jcol, IndexVector& perm_r, int maxsuper, int& nseg,  BlockIndexVector& lsub_col, IndexVector& segrep, BlockIndexVector& repfnz, IndexVector& xprune, IndexVector& marker, IndexVector& parent, IndexVector& xplore, GlobalLU_t& glu);
-  static int LU_column_bmod(const int jcol, const int nseg, BlockScalarVector& dense, ScalarVector& tempv, BlockIndexVector& segrep, BlockIndexVector& repfnz, int fpanelc, GlobalLU_t& glu); 
-  static int LU_copy_to_ucol(const int jcol, const int nseg, IndexVector& segrep, BlockIndexVector& repfnz ,IndexVector& perm_r, BlockScalarVector& dense, GlobalLU_t& glu); 
-  static void LU_pruneL(const int jcol, const IndexVector& perm_r, const int pivrow, const int nseg, const IndexVector& segrep, BlockIndexVector& repfnz, IndexVector& xprune, GlobalLU_t& glu);
+  static int LU_column_dfs(const int m, const int jcol, IndexVector& perm_r, int maxsuper, int& nseg,  BlockIndexVector lsub_col, IndexVector& segrep, BlockIndexVector repfnz, IndexVector& xprune, IndexVector& marker, IndexVector& parent, IndexVector& xplore, GlobalLU_t& glu);
+  static int LU_column_bmod(const int jcol, const int nseg, BlockScalarVector dense, ScalarVector& tempv, BlockIndexVector segrep, BlockIndexVector repfnz, int fpanelc, GlobalLU_t& glu); 
+  static int LU_copy_to_ucol(const int jcol, const int nseg, IndexVector& segrep, BlockIndexVector repfnz ,IndexVector& perm_r, BlockScalarVector dense, GlobalLU_t& glu); 
+  static void LU_pruneL(const int jcol, const IndexVector& perm_r, const int pivrow, const int nseg, const IndexVector& segrep, BlockIndexVector repfnz, IndexVector& xprune, GlobalLU_t& glu);
   static void LU_countnz(const int n, int& nnzL, int& nnzU, GlobalLU_t& glu); 
   static void LU_fixupL(const int n, const IndexVector& perm_r, GlobalLU_t& glu); 
 
diff --git a/Eigen/src/SparseLU/SparseLU_column_bmod.h b/Eigen/src/SparseLU/SparseLU_column_bmod.h
index 94f18fb73..abe3d9956 100644
--- a/Eigen/src/SparseLU/SparseLU_column_bmod.h
+++ b/Eigen/src/SparseLU/SparseLU_column_bmod.h
@@ -47,7 +47,7 @@
  * 
  */
 template <typename Scalar, typename Index>
-int SparseLUBase<Scalar,Index>::LU_column_bmod(const int jcol, const int nseg, BlockScalarVector& dense, ScalarVector& tempv, BlockIndexVector& segrep, BlockIndexVector& repfnz, int fpanelc, GlobalLU_t& glu)
+int SparseLUBase<Scalar,Index>::LU_column_bmod(const int jcol, const int nseg, BlockScalarVector dense, ScalarVector& tempv, BlockIndexVector segrep, BlockIndexVector repfnz, int fpanelc, GlobalLU_t& glu)
 {
   int  jsupno, k, ksub, krep, ksupno; 
   int lptr, nrow, isub, irow, nextlu, new_next, ufirst; 
diff --git a/Eigen/src/SparseLU/SparseLU_column_dfs.h b/Eigen/src/SparseLU/SparseLU_column_dfs.h
index fa8dcf18d..7ca3e4755 100644
--- a/Eigen/src/SparseLU/SparseLU_column_dfs.h
+++ b/Eigen/src/SparseLU/SparseLU_column_dfs.h
@@ -82,7 +82,7 @@ struct LU_column_dfs_traits
 };
 
 template <typename Scalar, typename Index>
-int SparseLUBase<Scalar,Index>::LU_column_dfs(const int m, const int jcol, IndexVector& perm_r, int maxsuper, int& nseg,  BlockIndexVector& lsub_col, IndexVector& segrep, BlockIndexVector& repfnz, IndexVector& xprune, IndexVector& marker, IndexVector& parent, IndexVector& xplore, GlobalLU_t& glu)
+int SparseLUBase<Scalar,Index>::LU_column_dfs(const int m, const int jcol, IndexVector& perm_r, int maxsuper, int& nseg,  BlockIndexVector lsub_col, IndexVector& segrep, BlockIndexVector repfnz, IndexVector& xprune, IndexVector& marker, IndexVector& parent, IndexVector& xplore, GlobalLU_t& glu)
 {
   
   int jsuper = glu.supno(jcol); 
diff --git a/Eigen/src/SparseLU/SparseLU_copy_to_ucol.h b/Eigen/src/SparseLU/SparseLU_copy_to_ucol.h
index d3227469d..1295812f4 100644
--- a/Eigen/src/SparseLU/SparseLU_copy_to_ucol.h
+++ b/Eigen/src/SparseLU/SparseLU_copy_to_ucol.h
@@ -44,7 +44,7 @@
  * 
  */
 template <typename Scalar, typename Index>
-int SparseLUBase<Scalar,Index>::LU_copy_to_ucol(const int jcol, const int nseg, IndexVector& segrep, BlockIndexVector& repfnz ,IndexVector& perm_r, BlockScalarVector& dense, GlobalLU_t& glu)
+int SparseLUBase<Scalar,Index>::LU_copy_to_ucol(const int jcol, const int nseg, IndexVector& segrep, BlockIndexVector repfnz ,IndexVector& perm_r, BlockScalarVector dense, GlobalLU_t& glu)
 {  
   Index ksub, krep, ksupno; 
     
diff --git a/Eigen/src/SparseLU/SparseLU_pruneL.h b/Eigen/src/SparseLU/SparseLU_pruneL.h
index d8c58e039..4aa383b7e 100644
--- a/Eigen/src/SparseLU/SparseLU_pruneL.h
+++ b/Eigen/src/SparseLU/SparseLU_pruneL.h
@@ -47,7 +47,7 @@
  * 
  */
 template <typename Scalar, typename Index>
-void SparseLUBase<Scalar,Index>::LU_pruneL(const int jcol, const IndexVector& perm_r, const int pivrow, const int nseg, const IndexVector& segrep, BlockIndexVector& repfnz, IndexVector& xprune, GlobalLU_t& glu)
+void SparseLUBase<Scalar,Index>::LU_pruneL(const int jcol, const IndexVector& perm_r, const int pivrow, const int nseg, const IndexVector& segrep, BlockIndexVector repfnz, IndexVector& xprune, GlobalLU_t& glu)
 {
   // For each supernode-rep irep in U(*,j]
   int jsupno = glu.supno(jcol);