diff --git a/fourindex.h b/fourindex.h
index e30925b..414acfb 100644
--- a/fourindex.h
+++ b/fourindex.h
@@ -310,7 +310,7 @@ public:
                 fourindex_ext *base;
 		matel4stored<I,T> my;
 		int permindex;
-		fourindex_ext::iterator it;
+		typename fourindex_ext::iterator it;
 
 		//private methods
                 void setup(void) //make a copy of *it to my with scaled element and anti/permuted indices
@@ -642,9 +642,9 @@ unsigned long J = SMat_index_1(k,l);
 #ifdef DEBUG
      	if (*count != 1) laerror("lval (i,j,k,l) with count > 1 in fourindex_dense");
        	if (I<0 || I>=(unsigned long)nn || J<0 || J>=(unsigned long)nn) laerror("fourindex_dense index out of range");
-       	if (!v) laerror("access to unallocated fourindex_dense");
+       	if (!NRSMat<T>::v) laerror("access to unallocated fourindex_dense");
 #endif
-return v[SMat_index(I,J)];
+return NRSMat<T>::v[SMat_index(I,J)];
 }
 
 template<class T, class DUMMY>
@@ -655,9 +655,9 @@ unsigned long J = SMat_index_1(k,l);
 //I,J act as indices of a NRSmat
 #ifdef DEBUG
        	if (I<0 || I>=(unsigned long)nn || J<0 || J>=(unsigned long)nn) laerror("fourindex_dense index out of range");
-       	if (!v) laerror("access to unallocated fourindex_dense");
+       	if (!NRSMat<T>::v) laerror("access to unallocated fourindex_dense");
 #endif
-return v[SMat_index(I,J)];
+return NRSMat<T>::v[SMat_index(I,J)];
 }
 
 
diff --git a/nonclass.cc b/nonclass.cc
index 37a7ddd..5810159 100644
--- a/nonclass.cc
+++ b/nonclass.cc
@@ -1,6 +1,6 @@
 #ifndef NONCBLAS
 extern "C" {
-#include "atlas_enum.h"
+#include "cblas.h"
 #include "clapack.h"
 }
 #else
diff --git a/smat.h b/smat.h
index fe76612..b1e0c11 100644
--- a/smat.h
+++ b/smat.h
@@ -183,7 +183,7 @@ NRSMat<double>::operator+=(const NRSMat<double> & rhs)
 }
 
 template<>
-NRSMat< complex<double> > &
+inline NRSMat< complex<double> > &
 NRSMat< complex<double> >::operator+=(const NRSMat< complex<double> > & rhs)
 {
 #ifdef DEBUG
@@ -544,14 +544,14 @@ public:
 #ifdef DEBUG
 		if(i<=0||j<=0||i>nn||j>nn) laerror("index out of range in NRSMat_from1");
 #endif
-		return v[SMat_index_1(i,j)];
+		return NRSMat<T>::v[SMat_index_1(i,j)];
 		}
         inline  T& operator() (const int i, const int j) 
 		{
 #ifdef DEBUG
                 if(i<=0||j<=0||i>nn||j>nn) laerror("index out of range in NRSMat_from1");
 #endif
-		return v[SMat_index_1(i,j)];
+		return NRSMat<T>::v[SMat_index_1(i,j)];
 		}
 };
 
diff --git a/t.cc b/t.cc
index 7ca7df4..66569c5 100644
--- a/t.cc
+++ b/t.cc
@@ -2,7 +2,6 @@
 
 #include <time.h>
 #include "la.h"
-#include "traceback.h"
 #include "sparsemat.h"
 #include "matexp.h"
 #include "fourindex.h"
@@ -11,6 +10,9 @@
 #include "conjgrad.h"
 #include "diis.h"
 #include "bitvector.h"
+#ifdef USE_TRACEBACK
+#include "traceback.h"
+#endif
 
 
 extern void test(const NRVec<double> &x);
@@ -38,10 +40,14 @@ complex<double> mycident (const complex<double>&x) {return x;}
 
 int main()
 {
+#ifdef USE_TRACEBACK
 sigtraceback(SIGSEGV,1);
 sigtraceback(SIGABRT,1);
 sigtraceback(SIGBUS,1);
 sigtraceback(SIGFPE,1);
+#endif
+
+
 NRVec<double> x(1.,10);
 NRVec<double> y(2.,10);
 NRVec<double> z(-2.,10);
diff --git a/t2.cc b/t2.cc
index 58f8768..501b6bc 100644
--- a/t2.cc
+++ b/t2.cc
@@ -1,12 +1,14 @@
 
 #include <time.h>
 #include "la.h"
-#include "traceback.h"
 #include "sparsemat.h"
 #include "matexp.h"
 #include "fourindex.h"
 #include "bitvector.h"
 
+#ifdef USE_TRACEBACK
+#include "traceback.h"
+#endif
 
 void test(const NRVec<double> &x)
 {
diff --git a/test.cc b/test.cc
index e66bf74..84d3500 100644
--- a/test.cc
+++ b/test.cc
@@ -3,7 +3,9 @@
 #include "la.h"
 #include "fourindex.h"
 #include "laerror.h"
+#ifdef USE_TRSACEBACK
 #include "traceback.h"
+#endif
 
 void test2(char *msg)
 {
@@ -12,10 +14,12 @@ laerror(msg);
 
 int main(void)
 {
+#ifdef USE_TRSACEBACK
 sigtraceback(SIGSEGV,1);
 sigtraceback(SIGABRT,1);
 sigtraceback(SIGBUS,1);
 sigtraceback(SIGFPE,1);
+#endif
 
 bitvector v(100);
 v.fill();