diff --git a/FDTD/extensions/engine_ext_lorentzmaterial.cpp b/FDTD/extensions/engine_ext_lorentzmaterial.cpp
index 40e006f..783829d 100644
--- a/FDTD/extensions/engine_ext_lorentzmaterial.cpp
+++ b/FDTD/extensions/engine_ext_lorentzmaterial.cpp
@@ -34,7 +34,7 @@ void Engine_Ext_LorentzMaterial::DoPreVoltageUpdates()
 {
 	for (int o=0;o<m_Order;++o)
 	{
-		if (m_Op_Ext_Lor->m_volt_ADE_On==false) continue;
+		if (m_Op_Ext_Lor->m_volt_ADE_On[o]==false) continue;
 
 		unsigned int **pos = m_Op_Ext_Lor->m_LM_pos[o];
 
@@ -93,7 +93,7 @@ void Engine_Ext_LorentzMaterial::DoPreCurrentUpdates()
 {
 	for (int o=0;o<m_Order;++o)
 	{
-		if (m_Op_Ext_Lor->m_curr_ADE_On==false) continue;
+		if (m_Op_Ext_Lor->m_curr_ADE_On[o]==false) continue;
 
 		unsigned int **pos = m_Op_Ext_Lor->m_LM_pos[o];
 
diff --git a/FDTD/extensions/operator_ext_dispersive.cpp b/FDTD/extensions/operator_ext_dispersive.cpp
index 56c333f..e5e9723 100644
--- a/FDTD/extensions/operator_ext_dispersive.cpp
+++ b/FDTD/extensions/operator_ext_dispersive.cpp
@@ -57,7 +57,7 @@ void Operator_Ext_Dispersive::ShowStat(ostream &ostr)  const
 	ostr << " Max. Dispersion Order N = " << m_Order << endl;
 	for (int i=0;i<m_Order;++i)
 	{
-		ostr << " N=" << i << ":\t Active cells\t\t: " << 	m_LM_Count[i] << endl;
+		ostr << " N=" << i << ":\t Active cells\t\t: " << 	m_LM_Count.at(i) << endl;
 		ostr << " N=" << i << ":\t Voltage ADE is \t: " << On_Off[m_volt_ADE_On[i]] << endl;
 		ostr << " N=" << i << ":\t Current ADE is \t: " << On_Off[m_curr_ADE_On[i]] << endl;
 	}
diff --git a/FDTD/extensions/operator_ext_lorentzmaterial.cpp b/FDTD/extensions/operator_ext_lorentzmaterial.cpp
index 99c59d5..d2b93ad 100644
--- a/FDTD/extensions/operator_ext_lorentzmaterial.cpp
+++ b/FDTD/extensions/operator_ext_lorentzmaterial.cpp
@@ -226,7 +226,7 @@ bool Operator_Ext_LorentzMaterial::BuildExtension()
 			m_LM_pos[order][n] = new unsigned int[m_LM_Count.at(order)];
 			for (unsigned int i=0; i<m_LM_Count.at(order); ++i)
 				m_LM_pos[order][n][i] = v_pos[n].at(i);
-			if (m_volt_ADE_On)
+			if (m_volt_ADE_On[order])
 			{
 				v_int_ADE[order][n]  = new FDTD_FLOAT[m_LM_Count.at(order)];
 				v_ext_ADE[order][n]  = new FDTD_FLOAT[m_LM_Count.at(order)];
@@ -237,7 +237,7 @@ bool Operator_Ext_LorentzMaterial::BuildExtension()
 					v_ext_ADE[order][n][i] = v_ext[n].at(i);
 				}
 			}
-			if (m_curr_ADE_On)
+			if (m_curr_ADE_On[order])
 			{
 				i_int_ADE[order][n]  = new FDTD_FLOAT[m_LM_Count.at(order)];
 				i_ext_ADE[order][n]  = new FDTD_FLOAT[m_LM_Count.at(order)];
diff --git a/openems.cpp b/openems.cpp
index 900b114..7cb82e3 100644
--- a/openems.cpp
+++ b/openems.cpp
@@ -623,14 +623,14 @@ int openEMS::SetupFDTD(const char* file)
 
 	SetupBoundaryConditions(BC);
 
-	if (m_CSX->GetQtyPropertyType(CSProperties::LORENTZMATERIAL)>0)
-		FDTD_Op->AddExtension(new Operator_Ext_LorentzMaterial(FDTD_Op));
-
 	double timestep=0;
 	FDTD_Opts->QueryDoubleAttribute("TimeStep",&timestep);
 	if (timestep)
 		FDTD_Op->SetTimestep(timestep);
 
+	if (m_CSX->GetQtyPropertyType(CSProperties::LORENTZMATERIAL)>0)
+		FDTD_Op->AddExtension(new Operator_Ext_LorentzMaterial(FDTD_Op));
+
 	//check all properties to request material storage during operator creation...
 	SetupMaterialStorages();