diff --git a/FDTD/operator.h b/FDTD/operator.h
index f60cd7e..55a01cf 100644
--- a/FDTD/operator.h
+++ b/FDTD/operator.h
@@ -45,7 +45,7 @@ public:
 	virtual bool SetGeometryCSX(ContinuousStructure* geo);
 	virtual ContinuousStructure* GetGeometryCSX() {return CSX;}
 
-	virtual int CalcECOperator( DebugFlags );
+	virtual int CalcECOperator( DebugFlags debugFlags = None );
 
 	//! Calculate the FDTD equivalent circuit parameter for the given position and direction ny. \sa Calc_EffMat_Pos
 	virtual bool Calc_ECPos(int ny, const unsigned int* pos, double* EC) const;
diff --git a/FDTD/operator_cylinder.cpp b/FDTD/operator_cylinder.cpp
index 385b29a..ce4dae7 100644
--- a/FDTD/operator_cylinder.cpp
+++ b/FDTD/operator_cylinder.cpp
@@ -57,6 +57,17 @@ void Operator_Cylinder::InitOperator()
 	Operator_Multithread::InitOperator();
 }
 
+int Operator_Cylinder::CalcECOperator( DebugFlags debugFlags )
+{
+	// debugs only work with the native vector dumps
+	bool natDump = g_settings.NativeFieldDumps();
+	g_settings.SetNativeFieldDumps(true);
+	int rc = Operator_Multithread::CalcECOperator(debugFlags);
+	// reset original settings
+	g_settings.SetNativeFieldDumps(natDump);
+	return rc;
+}
+
 inline unsigned int Operator_Cylinder::GetNumberOfLines(int ny) const
 {
 	//this is necessary for a correct field processing... cylindrical engine has to reset this by adding +1
diff --git a/FDTD/operator_cylinder.h b/FDTD/operator_cylinder.h
index ccbb8d1..d14a590 100644
--- a/FDTD/operator_cylinder.h
+++ b/FDTD/operator_cylinder.h
@@ -32,6 +32,8 @@ public:
 	static Operator_Cylinder* New(unsigned int numThreads = 0);
 	virtual ~Operator_Cylinder();
 
+	virtual int CalcECOperator( DebugFlags debugFlags = None );
+
 	virtual bool SetGeometryCSX(ContinuousStructure* geo);
 
 	virtual void ApplyElectricBC(bool* dirs);
diff --git a/FDTD/operator_cylindermultigrid.cpp b/FDTD/operator_cylindermultigrid.cpp
index cc184c7..eadf0e7 100644
--- a/FDTD/operator_cylindermultigrid.cpp
+++ b/FDTD/operator_cylindermultigrid.cpp
@@ -153,7 +153,7 @@ int Operator_CylinderMultiGrid::CalcECOperator( DebugFlags debugFlags )
 		m_InnerOp->SetTimestep(dT);
 
 	//calc inner child first
-	m_InnerOp->CalcECOperator( debugFlags );
+	m_InnerOp->CalcECOperator();
 
 	dT = m_InnerOp->GetTimestep();
 
@@ -163,7 +163,7 @@ int Operator_CylinderMultiGrid::CalcECOperator( DebugFlags debugFlags )
 		cerr << "Operator_CylinderMultiGrid::CalcECOperator(): Warning, timestep invalid... resetting..." << endl;
 		dT = opt_dT;
 		m_InnerOp->SetTimestep(dT);
-		m_InnerOp->CalcECOperator( debugFlags );
+		m_InnerOp->CalcECOperator();
 		return Operator_Cylinder::CalcECOperator( debugFlags );
 	}
 
diff --git a/FDTD/operator_cylindermultigrid.h b/FDTD/operator_cylindermultigrid.h
index ce9cc40..a0df835 100644
--- a/FDTD/operator_cylindermultigrid.h
+++ b/FDTD/operator_cylindermultigrid.h
@@ -41,7 +41,7 @@ public:
 
 	virtual unsigned int GetSplitPos() const {return m_Split_Pos;}
 
-	virtual int CalcECOperator( DebugFlags );
+	virtual int CalcECOperator( DebugFlags debugFlags = None );
 
 	virtual bool SetupExcitation(TiXmlElement* Excite, unsigned int maxTS);
 
diff --git a/FDTD/operator_multithread.h b/FDTD/operator_multithread.h
index da40fa1..dc4b524 100644
--- a/FDTD/operator_multithread.h
+++ b/FDTD/operator_multithread.h
@@ -31,7 +31,7 @@ public:
 	static Operator_Multithread* New(unsigned int numThreads = 0);
 	virtual ~Operator_Multithread();
 
-	virtual int CalcECOperator( DebugFlags );
+	virtual int CalcECOperator( DebugFlags debugFlags = None );
 
 	virtual void setNumThreads( unsigned int numThreads );
 
diff --git a/FDTD/operator_sse_compressed.h b/FDTD/operator_sse_compressed.h
index 42f3b05..a2cff2d 100644
--- a/FDTD/operator_sse_compressed.h
+++ b/FDTD/operator_sse_compressed.h
@@ -45,7 +45,7 @@ public:
 
 	virtual Engine* CreateEngine() const;
 
-	virtual int CalcECOperator( DebugFlags );
+	virtual int CalcECOperator( DebugFlags debugFlags = None );
 
 	inline virtual FDTD_FLOAT GetVV( unsigned int n, unsigned int x, unsigned int y, unsigned int z ) const { if (m_Use_Compression) return f4_vv_Compressed[n][m_Op_index[x][y][z%numVectors]].f[z/numVectors]; else return Operator_sse::GetVV(n,x,y,z);}
 	inline virtual FDTD_FLOAT GetVI( unsigned int n, unsigned int x, unsigned int y, unsigned int z ) const { if (m_Use_Compression) return f4_vi_Compressed[n][m_Op_index[x][y][z%numVectors]].f[z/numVectors]; else return Operator_sse::GetVI(n,x,y,z);}
diff --git a/tools/global.h b/tools/global.h
index b56a6dd..13b78ec 100644
--- a/tools/global.h
+++ b/tools/global.h
@@ -32,6 +32,8 @@ public:
 
 	//! Returns true if native field dumps are requested...
 	bool NativeFieldDumps() const {return m_nativeFieldDumps;}
+	//! Set dumps to use native fields.
+	void SetNativeFieldDumps(bool val) {m_nativeFieldDumps=val;}
 
 	void ShowArguments(std::ostream& ostr, std::string front=std::string());