diff --git a/src/include/global/QGlobals.h b/src/include/global/QGlobals.h
index 7f07f9c..adadbe3 100644
--- a/src/include/global/QGlobals.h
+++ b/src/include/global/QGlobals.h
@@ -363,7 +363,7 @@ private:
 };
 
 
-typedef std::vector <SeriesImageSet*> InstancesVecType;
+//typedef std::vector <SeriesImageSet*> InstancesVecType;
 
 typedef struct SeriesInfo
 {
@@ -374,8 +374,12 @@ typedef struct SeriesInfo
 	std::string unique_id;
 	DicomTagInfo_t* tag_info;
 	thumbnailImage* thumb_nail;
-	InstancesVecType* instances;
-	SeriesInfo() : pixmap_valid(false), unique_id(""), tag_info(nullptr), thumb_nail(nullptr), instances(nullptr) {}
+//	InstancesVecType* instances;
+	SeriesInfo() : pixmap_valid(false), unique_id(""), tag_info(nullptr), thumb_nail(nullptr) {}
+	~SeriesInfo(){
+	    delete tag_info;
+	    //delete thumb_nail;
+	}
 }SeriesInfo_t;
 typedef std::map<std::string, SeriesInfo_t*> SeriesMapType;
 
diff --git a/src/src/export/exportdialog.cpp b/src/src/export/exportdialog.cpp
index 78b96ea..b405f14 100644
--- a/src/src/export/exportdialog.cpp
+++ b/src/src/export/exportdialog.cpp
@@ -79,16 +79,17 @@ void ExportDialog::onBtnExportClicked()
 	}
 	else if (ui->rbAllOpendSeries->isChecked())// all opened series
 	{
-		InstancesVecType instanceVec;
-		DicomLoader::GetInstance()->getOpenedInstancesVec(instanceVec);
-		for (int i = 0; i < instanceVec.size(); i++)
-		{
-			SeriesImageSet *instance = instanceVec.at(i);
-			if (instance != nullptr)
-			{
-				options.inputData.push_back(instance->getCurSeriesName());
-			}
-		}
+	    //disable this function
+//		InstancesVecType instanceVec;
+//		DicomLoader::GetInstance()->getOpenedInstancesVec(instanceVec);
+//		for (int i = 0; i < instanceVec.size(); i++)
+//		{
+//			SeriesImageSet *instance = instanceVec.at(i);
+//			if (instance != nullptr)
+//			{
+//				options.inputData.push_back(instance->getCurSeriesName());
+//			}
+//		}
 	}
 
 	if (ui->rbJPEG->isChecked())