diff --git a/reg23Topograms/itkDTRrecon/itkImageProcessor.cpp b/reg23Topograms/itkDTRrecon/itkImageProcessor.cpp
index 7120366..c1d01e4 100644
--- a/reg23Topograms/itkDTRrecon/itkImageProcessor.cpp
+++ b/reg23Topograms/itkDTRrecon/itkImageProcessor.cpp
@@ -466,6 +466,11 @@ int itkImageProcessor::load3DSerieFromFiles( std::vector<std::string> v_fnames){
         caster3D->SetInput(imageSeriesReader3D->GetOutput());
         caster3D->Update();
 
+        if (m_VolumeSourceDupli) {
+            m_VolumeSourceDupli = NULL;
+            m_VolumeSourceDupli = DuplicatorType::New();
+        }
+
         m_VolumeSourceDupli->SetInputImage(caster3D->GetOutput());
         m_VolumeSourceDupli->Update();
 
@@ -595,6 +600,11 @@ int itkImageProcessor::load3DSerieFromFolder(const char * pcDirName)
             caster3D->SetInput(imageSeriesReader3D->GetOutput());
             caster3D->Update();
 
+            if (m_VolumeSourceDupli) {
+                m_VolumeSourceDupli = NULL;
+                m_VolumeSourceDupli = DuplicatorType::New();
+            }
+
             m_VolumeSourceDupli->SetInputImage(caster3D->GetOutput());
             m_VolumeSourceDupli->Update();
 
@@ -623,18 +633,22 @@ int itkImageProcessor::fill3DVolumeMeta(
 
 
     if(m_CTMetaInfo != NULL){
+        m_CTMetaInfo = NULL;
         // TODO UNLOAD
     }
 
     if(m_DRTImage1MetaInfo != NULL){
+        m_DRTImage1MetaInfo = NULL;
         // TODO UNLOAD
     }
 
     if(m_DRTImage2MetaInfo != NULL){
+        m_DRTImage2MetaInfo = NULL;
         // TODO UNLOAD
     }
 
     if(m_RTMetaInfo != NULL){
+        m_RTMetaInfo = NULL;
         // TODO UNLOAD
     }
 
@@ -711,6 +725,11 @@ int itkImageProcessor::fill3DVolumeMeta(
     pZeroOrigin[1] = 0.;
     pZeroOrigin[2] = 0.;
 
+    if (m_3DInputChangeInformationToZero) {
+        m_3DInputChangeInformationToZero = NULL;
+        m_3DInputChangeInformationToZero = ChangeInformationFilterType::New();
+    }
+
     m_3DInputChangeInformationToZero->SetInput(
                 m_VolumeSourceDupli->GetOutput());
     m_3DInputChangeInformationToZero->SetOutputOrigin(
@@ -1024,6 +1043,11 @@ int itkImageProcessor::load2D(const char * pcFName){
     switch (currProjOrientation) {
     case eProjectionOrientationType::PA:
 
+        if (m_PASourceDupli) {
+            m_PASourceDupli = NULL;
+            m_PASourceDupli = DuplicatorType::New();
+        }
+
         //m_ImageIntensity = d_image1IntensityWindow;
         m_Duplicator = m_PASourceDupli;
         m_TImageMeta = m_TImage1MetaInfo;
@@ -1033,6 +1057,11 @@ int itkImageProcessor::load2D(const char * pcFName){
 
     case eProjectionOrientationType::LAT:
 
+        if (m_LATSourceDupli) {
+            m_LATSourceDupli = NULL;
+            m_LATSourceDupli = DuplicatorType::New();
+        }
+
         //m_ImageIntensity = d_image2IntensityWindow;
         m_Duplicator = m_LATSourceDupli;
         //        m_ImLoaded = &image2D2Loaded;