diff --git a/src/test/java/org/gcube/portlets/user/workspace/DonwloadFilesTester.java b/src/test/java/org/gcube/portlets/user/workspace/DonwloadFilesTester.java
new file mode 100644
index 0000000..580c57f
--- /dev/null
+++ b/src/test/java/org/gcube/portlets/user/workspace/DonwloadFilesTester.java
@@ -0,0 +1,198 @@
+/**
+ * 
+ */
+package org.gcube.portlets.user.workspace;
+
+import java.io.BufferedWriter;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStreamWriter;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+import org.gcube.common.homelibrary.home.HomeLibrary;
+import org.gcube.common.homelibrary.home.exceptions.InternalErrorException;
+import org.gcube.common.homelibrary.home.workspace.Workspace;
+import org.gcube.common.homelibrary.home.workspace.WorkspaceFolder;
+import org.gcube.common.homelibrary.home.workspace.WorkspaceItem;
+import org.gcube.common.homelibrary.home.workspace.WorkspaceItemType;
+import org.gcube.common.homelibrary.home.workspace.folder.FolderItem;
+import org.gcube.common.homelibrary.home.workspace.folder.FolderItemType;
+import org.gcube.common.homelibrary.home.workspace.folder.items.ExternalFile;
+import org.gcube.common.scope.api.ScopeProvider;
+import org.gcube.common.scope.impl.ScopeBean;
+
+/**
+ * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
+ * @Dec 17, 2013
+ * 
+ */
+public class DonwloadFilesTester {
+
+	
+	protected static Logger logger = Logger.getLogger(SearchTextTest.class);
+//	public static String DEFAULT_SCOPE = "/d4science.research-infrastructures.eu/gCubeApps/EcologicalModelling"; //PRODUCTION
+	public static String DEFAULT_SCOPE = "/gcube/devsec"; //DEV
+	
+	public static String USER = "francesco.mangiacrapa"; //PRODUCTION
+	
+	private static BufferedWriter writer;
+	private static OutputStreamWriter out;
+	
+	static final String itemID = "165ba18a-a08a-42c6-ade5-9b93d1f844ac";
+	static WorkspaceItem root;
+
+	public static void main(String[] args) {
+
+		try {
+			
+			ScopeBean scope = new ScopeBean(DEFAULT_SCOPE);
+			ScopeProvider.instance.set(scope.toString());
+			
+			Workspace ws = HomeLibrary.getHomeManagerFactory().getHomeManager().getHome(USER).getWorkspace();
+			out = new OutputStreamWriter(new FileOutputStream("Csv-error-file.csv"), "UTF-8");
+			writer = new BufferedWriter(out);
+			
+		    writer.write("Id;Name;Path;Parent");
+		    
+		    
+			System.out.println("Start");
+//			WorkspaceItem root = ws.getRoot();
+			
+			root = ws.getItem(itemID);
+			
+			depthVisit(root);
+
+//			new Thread(){
+//				public void run() {
+//					try {
+//						
+//						depthVisit(root);
+//						
+//					} catch (InternalErrorException e) {
+//						// TODO Auto-generated catch block
+//						e.printStackTrace();
+//					}
+//				};
+//				
+//			}.start();
+			
+			System.out.println("waiting 10 sec..");
+			Thread.sleep(10000);
+			
+			
+			System.out.println("End");
+		} catch (Exception e) {
+			e.printStackTrace();
+		}finally{
+			System.out.println("writer close");
+			try {writer.close();} catch (Exception ex) {}
+		}
+	}
+
+	public static void depthVisit(WorkspaceItem item) throws InternalErrorException {
+
+		if (item.getType().equals(WorkspaceItemType.FOLDER) || item.getType().equals(WorkspaceItemType.SHARED_FOLDER)) {
+
+			WorkspaceFolder folder = (WorkspaceFolder) item;
+			System.out.println("\nVisit Folder: " + folder.getName() +";  Folder is shared: "+folder.isShared());
+			List<? extends WorkspaceItem> children = folder.getChildren();
+
+			for (WorkspaceItem workspaceItem : children) {
+				depthVisit(workspaceItem);
+			}
+		} else {
+			
+			System.out.println("Item name: " + item.getName() +";  Parent Folder: "+item.getParent().getName());
+
+			if(item.getType().equals(WorkspaceItemType.FOLDER_ITEM)){
+				
+				FolderItem folderItem = (FolderItem) item;
+				
+				if(folderItem.getFolderItemType().equals(FolderItemType.EXTERNAL_FILE)){
+					
+					System.out.println("Item is external file: " + item.getName());
+					
+					final ExternalFile f = (ExternalFile) folderItem;
+					
+					try{
+
+						 Thread t = new Thread(){
+							
+							 public void run() {
+								 
+								try {
+									tryGetPayload(f);
+								} catch (Exception e) {
+									try {
+										System.out.println("Item name: "+f.getName() + "not exists into storage");
+										erroFile(f);
+									} catch (InternalErrorException e1) {
+									}
+							
+								}
+							}
+						 };
+						 
+						 t.start();
+
+//						 System.out.println("join 3 sec");
+//						 t.join(1000);
+//
+//						 System.out.println("join 1 sec terminated");
+//						if(is==null)
+//							throw new Exception("is is null");
+					
+					}catch (Exception e) {
+						System.out.println("Item name: "+f.getName() + "not exists into storage");
+						erroFile(f);
+					}
+				
+				}
+			}
+
+		}
+	}
+		
+	public static void tryGetPayload(ExternalFile f) throws Exception{
+		
+		try {
+		
+			InputStream is = f.getData();
+			System.out.println("Get payload for file : "+f.getName() +" terminated");
+			
+			if(is==null)
+				throw new Exception("is is null");
+		
+		} catch (InternalErrorException e1) {
+			System.out.println("Error on :"+f.getName());
+			throw new Exception("is is null");
+		}
+		
+	}
+	
+	public synchronized static void erroFile(WorkspaceItem item) throws InternalErrorException{
+		
+		try{
+			
+			try {
+			
+				String parentName="";
+				
+				if(item.getParent()!=null)
+					parentName = item.getParent().getName();
+				
+				writer.write("\n "+item.getId()+";"+item.getName()+";"+item.getPath()+";"+parentName);
+			
+			} catch (IOException ex) {
+				ex.printStackTrace();
+			} 
+
+
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+
+}