diff --git a/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXExportWizardTD.java b/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXExportWizardTD.java
index ee65cf3..d63b580 100644
--- a/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXExportWizardTD.java
+++ b/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXExportWizardTD.java
@@ -25,7 +25,7 @@ import com.sencha.gxt.widget.core.client.box.AutoProgressMessageBox;
 public class SDMXExportWizardTD extends WizardWindow {
 
 	protected SDMXExportSession exportSession;
-	
+
 	/**
 	 * The id of the {@link CSVTarget} to use.
 	 * 
@@ -56,15 +56,16 @@ public class SDMXExportWizardTD extends WizardWindow {
 							if (caught instanceof TDGWTIsLockedException) {
 								Log.error(caught.getLocalizedMessage());
 								showErrorAndHide("Error Locked",
-										caught.getLocalizedMessage(), caught);
+										caught.getLocalizedMessage(), "",
+										caught);
 							} else {
 								Log.error("No Tabular Resource Information retrived from server "
 										+ caught.getLocalizedMessage());
 								box.hide();
-								showErrorAndHide("Error",
-										"Error retrieving tabular resource information: "
-												+ caught.getLocalizedMessage(),
-										caught);
+								showErrorAndHide(
+										"Error",
+										"Error retrieving tabular resource information: ",
+										caught.getLocalizedMessage(), caught);
 							}
 						}
 					}
diff --git a/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXOperationInProgressCard.java b/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXOperationInProgressCard.java
index 41d263f..9632708 100644
--- a/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXOperationInProgressCard.java
+++ b/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXOperationInProgressCard.java
@@ -23,6 +23,7 @@ import com.sencha.gxt.core.client.util.Margins;
 import com.sencha.gxt.widget.core.client.FramedPanel;
 import com.sencha.gxt.widget.core.client.container.BoxLayoutContainer.BoxLayoutData;
 import com.sencha.gxt.widget.core.client.container.HtmlLayoutContainer;
+import com.sencha.gxt.widget.core.client.container.MarginData;
 import com.sencha.gxt.widget.core.client.container.VBoxLayoutContainer;
 import com.sencha.gxt.widget.core.client.container.VBoxLayoutContainer.VBoxLayoutAlign;
 
@@ -95,7 +96,7 @@ public class SDMXOperationInProgressCard extends WizardCard implements
 		operationInProgressPanel.add(resultField, new BoxLayoutData(
 				new Margins(10, 5, 10, 5)));
 
-		setContent(operationInProgressPanel);
+		setCenterWidget(operationInProgressPanel, new MarginData(0));
 		resultField.setVisible(false);
 
 	}
@@ -121,12 +122,12 @@ public class SDMXOperationInProgressCard extends WizardCard implements
 							if (caught instanceof TDGWTIsLockedException) {
 								Log.error(caught.getLocalizedMessage());
 								showErrorAndHide("Error Locked",
-										caught.getLocalizedMessage(), caught);
+										caught.getLocalizedMessage(), "",
+										caught);
 							} else {
 								showErrorAndHide("Error in exportSDMX",
-										"An error occured in exportSDMX: "
-												+ caught.getLocalizedMessage(),
-										caught);
+										"An error occured in exportSDMX.",
+										caught.getLocalizedMessage(), caught);
 							}
 						}
 					}
@@ -137,7 +138,6 @@ public class SDMXOperationInProgressCard extends WizardCard implements
 	public void setup() {
 		getWizardWindow().setEnableBackButton(false);
 		setBackButtonVisible(false);
-		setNextButtonVisible(false);
 		getWizardWindow().setEnableNextButton(false);
 		getWizardWindow().setNextButtonToFinish();
 		exportSDMX();
@@ -193,8 +193,7 @@ public class SDMXOperationInProgressCard extends WizardCard implements
 							new SessionExpiredEvent(
 									SessionExpiredType.EXPIREDONSERVER));
 		} else {
-			showErrorAndHide("Error in SDMX Export",
-					reason,caught);
+			showErrorAndHide("Error in SDMX Export", reason, details, caught);
 		}
 		forceLayout();
 	}
diff --git a/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXRegistrySelectionCard.java b/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXRegistrySelectionCard.java
index 0989643..77dfbbf 100644
--- a/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXRegistrySelectionCard.java
+++ b/src/main/java/org/gcube/portlets/user/td/sdmxexportwidget/client/SDMXRegistrySelectionCard.java
@@ -21,6 +21,7 @@ import com.google.gwt.user.client.rpc.AsyncCallback;
 import com.google.gwt.user.client.ui.HasValue;
 import com.google.gwt.user.client.ui.VerticalPanel;
 import com.sencha.gxt.core.client.util.ToggleGroup;
+import com.sencha.gxt.widget.core.client.container.MarginData;
 import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer;
 import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer.VerticalLayoutData;
 import com.sencha.gxt.widget.core.client.form.FieldLabel;
@@ -132,7 +133,7 @@ public class SDMXRegistrySelectionCard extends WizardCard {
 			}
 		});
 
-		setContent(registrySelectionPanel);
+		setCenterWidget(registrySelectionPanel, new MarginData(0));
 
 	}
 
@@ -158,8 +159,8 @@ public class SDMXRegistrySelectionCard extends WizardCard {
 										} else {	
 											Log.error("SDMXRegistrySource do not stored "
 												+ caught.getLocalizedMessage());
-											showErrorAndHide("Error", "SDMXRegistrySource do not stored "
-													+ caught.getLocalizedMessage(), caught);
+											showErrorAndHide("Error", "SDMXRegistrySource do not stored."
+													,caught.getLocalizedMessage(), caught);
 										}
 									}