diff --git a/src/main/java/org/gcube/portlets/user/td/csvimportwidget/client/csvgrid/CSVGrid.java b/src/main/java/org/gcube/portlets/user/td/csvimportwidget/client/csvgrid/CSVGrid.java
index 9fdd906..7815d5d 100644
--- a/src/main/java/org/gcube/portlets/user/td/csvimportwidget/client/csvgrid/CSVGrid.java
+++ b/src/main/java/org/gcube/portlets/user/td/csvimportwidget/client/csvgrid/CSVGrid.java
@@ -8,7 +8,7 @@ import java.util.ArrayList;
 import org.gcube.portlets.user.td.csvimportwidget.client.data.CSVRow;
 import org.gcube.portlets.user.td.csvimportwidget.client.data.CSVRowKeyProvider;
 import org.gcube.portlets.user.td.csvimportwidget.client.data.CSVRowValueProvider;
-
+import org.gcube.portlets.user.td.wizardwidget.client.util.UtilsGXT3;
 
 import com.allen_sauer.gwt.log.client.Log;
 import com.google.gwt.core.client.GWT;
@@ -26,28 +26,28 @@ import com.sencha.gxt.widget.core.client.grid.ColumnModel;
 import com.sencha.gxt.widget.core.client.grid.Grid;
 import com.sencha.gxt.widget.core.client.grid.RowNumberer;
 
-
 /**
  * 
- * @author "Giancarlo Panichi" 
- * <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a> 
+ * @author "Giancarlo Panichi" <a
+ *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
  *
  */
 public class CSVGrid extends Grid<CSVRow> {
-	
-	private static final String csvImportFileServlet="CSVImportFileServlet";
+
+	private static final String csvImportFileServlet = "CSVImportFileServlet";
 	protected CSVGridView gridViewSample;
 
-	public CSVGrid()
-	{
-		super(new ListStore<CSVRow>(new CSVRowKeyProvider()), new ColumnModel<CSVRow>(new ArrayList<ColumnConfig<CSVRow,?>>()));
+	public CSVGrid() {
+		super(new ListStore<CSVRow>(new CSVRowKeyProvider()),
+				new ColumnModel<CSVRow>(
+						new ArrayList<ColumnConfig<CSVRow, ?>>()));
 
-		setHeight(200);  
+		setHeight(200);
 		setBorders(true);
 
 		getView().setStripeRows(true);
 		setLoadMask(true);
-		
+
 		gridViewSample = new CSVGridView();
 		setView(gridViewSample);
 
@@ -55,49 +55,61 @@ public class CSVGrid extends Grid<CSVRow> {
 		setBorders(true);
 	}
 
-	public void configureColumns(ArrayList<String> columnNames)
-	{
+	public void configureColumns(ArrayList<String> columnNames) {
 		ColumnModel<CSVRow> columnModel = createColumnModel(columnNames);
 		ListStore<CSVRow> store = createStore(columnNames);
 		reconfigure(store, columnModel);
 		getView().refresh(true);
 	}
 
-	protected ListStore<CSVRow> createStore(ArrayList<String> columnNames)
-	{
-		String path =  GWT.getModuleBaseURL()+csvImportFileServlet;  
-		Log.info("CSVImportFileServlet path:"+path);
-		// use a http proxy to get the data  
-		RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
+	protected ListStore<CSVRow> createStore(ArrayList<String> columnNames) {
+		ListStore<CSVRow> store=null;
 		
-		HttpProxy<ListLoadConfig> proxy = new HttpProxy<ListLoadConfig>(builder);
+		try {
+			String path = GWT.getModuleBaseURL() + csvImportFileServlet;
+			Log.info("CSVImportFileServlet path:" + path);
+			// use a http proxy to get the data
+			RequestBuilder builder = new RequestBuilder(RequestBuilder.GET,
+					path);
 
+			HttpProxy<ListLoadConfig> proxy = new HttpProxy<ListLoadConfig>(
+					builder);
 
-		// need a loader, proxy, and reader  
-		DataReader<ListLoadResult<CSVRow>, String> reader = new CSVJsonReader();
+			// need a loader, proxy, and reader
+			DataReader<ListLoadResult<CSVRow>, String> reader = new CSVJsonReader();
 
+			final ListLoader<ListLoadConfig, ListLoadResult<CSVRow>> loader = new ListLoader<ListLoadConfig, ListLoadResult<CSVRow>>(
+					proxy, reader);
 
-		final ListLoader<ListLoadConfig, ListLoadResult<CSVRow>> loader = new ListLoader<ListLoadConfig, ListLoadResult<CSVRow>>(proxy, reader);
+			store = new ListStore<CSVRow>(
+					new CSVRowKeyProvider());
+			loader.addLoadHandler(new LoadResultListStoreBinding<ListLoadConfig, CSVRow, ListLoadResult<CSVRow>>(
+					store));
 
-		ListStore<CSVRow> store = new ListStore<CSVRow>(new CSVRowKeyProvider());
-		loader.addLoadHandler(new LoadResultListStoreBinding<ListLoadConfig, CSVRow, ListLoadResult<CSVRow>>(store));
+			loader.load();
+
+			
+		} catch (Exception e) {
+			UtilsGXT3.alert("Error","Error creating the store: "+e.getLocalizedMessage());
+			Log.error("Error in creating the store: "+e.getLocalizedMessage());
+			e.printStackTrace();
+			
+		}
 		
-		loader.load();
-
 		return store;
-
 	}
 
-	protected ColumnModel<CSVRow> createColumnModel(ArrayList<String> columnNames)
-	{
-		ArrayList<ColumnConfig<CSVRow, ?>> columns = new ArrayList<ColumnConfig<CSVRow, ?>>(); 
+	protected ColumnModel<CSVRow> createColumnModel(
+			ArrayList<String> columnNames) {
+		ArrayList<ColumnConfig<CSVRow, ?>> columns = new ArrayList<ColumnConfig<CSVRow, ?>>();
 
 		columns.add(new RowNumberer<CSVRow>(new IdentityValueProvider<CSVRow>()));
 
-		for (int i = 0; i<columnNames.size(); i++) {
-			String columnField = "field"+(i+1);
+		for (int i = 0; i < columnNames.size(); i++) {
+			String columnField = "field" + (i + 1);
 			String columnName = columnNames.get(i);
-			ColumnConfig<CSVRow, String> columnConfig = new ColumnConfig<CSVRow, String>(new CSVRowValueProvider(columnField), 100, columnName);
+			ColumnConfig<CSVRow, String> columnConfig = new ColumnConfig<CSVRow, String>(
+					new CSVRowValueProvider(columnField), 100, columnName);
 			columns.add(columnConfig);
 		}
 
@@ -106,20 +118,22 @@ public class CSVGrid extends Grid<CSVRow> {
 
 	/**
 	 * Returns the import column mask.
-	 * @return an array of boolean where the item is <code>true</code> if the column have to be imported, <code>false</code> otherwise.
+	 * 
+	 * @return an array of boolean where the item is <code>true</code> if the
+	 *         column have to be imported, <code>false</code> otherwise.
 	 */
-	public ArrayList<Boolean> getImportColumnsMask()
-	{
-		//boolean[] columnMask = new boolean[getColumnModel().getColumnCount()];
-		int limit=getColumnModel().getColumnCount();
-		ArrayList<Boolean> columnMask= new ArrayList<Boolean>();
+	public ArrayList<Boolean> getImportColumnsMask() {
+		// boolean[] columnMask = new
+		// boolean[getColumnModel().getColumnCount()];
+		int limit = getColumnModel().getColumnCount();
+		ArrayList<Boolean> columnMask = new ArrayList<Boolean>();
 		ArrayList<Integer> excluded = gridViewSample.getExcludedColumns();
-		for (int i = 1; i<limit; i++) {
-			//columnMask[i] = !excluded.contains(i);
-			Boolean b=!excluded.contains(i);
+		for (int i = 1; i < limit; i++) {
+			// columnMask[i] = !excluded.contains(i);
+			Boolean b = !excluded.contains(i);
 			columnMask.add(b);
 		}
-		Log.debug("Column Mask: "+columnMask);
+		Log.debug("Column Mask: " + columnMask);
 		return columnMask;
 	}
 
diff --git a/src/main/java/org/gcube/portlets/user/td/csvimportwidget/client/data/CSVRow.java b/src/main/java/org/gcube/portlets/user/td/csvimportwidget/client/data/CSVRow.java
index 5e41cff..cd80cef 100644
--- a/src/main/java/org/gcube/portlets/user/td/csvimportwidget/client/data/CSVRow.java
+++ b/src/main/java/org/gcube/portlets/user/td/csvimportwidget/client/data/CSVRow.java
@@ -21,14 +21,15 @@ public final class CSVRow extends JavaScriptObject {
 	 */
 	public String getId() {
 		//FIXME
-		return getField("Id");
+		
+		return getField("id");
 	}
 	
 
 	
 	public native String getField(String column)
 	/*-{
-	        return this[column];
+	        return this[column].toString();
 	}-*/;