diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
index cceab0b..43e2b23 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/SessionUtil.java
@@ -16,6 +16,7 @@ import org.gcube.data.analysis.tabulardata.service.tabular.TabularResource;
 import org.gcube.portal.custom.scopemanager.scopehelper.ScopeHelper;
 import org.gcube.portlets.user.td.gwtservice.server.file.FileUploadSession;
 import org.gcube.portlets.user.td.gwtservice.server.trservice.TRTasksManager;
+import org.gcube.portlets.user.td.gwtservice.shared.Constants;
 import org.gcube.portlets.user.td.gwtservice.shared.csv.CSVExportSession;
 import org.gcube.portlets.user.td.gwtservice.shared.csv.CSVImportSession;
 import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
@@ -82,15 +83,15 @@ public class SessionUtil {
 		ASLSession session;
 		if (username == null) {
 			logger.warn("no user found in session, using test one");
-			throw new TDGWTSessionExpiredException("Session Expired!");
-			/*
+			/*throw new TDGWTSessionExpiredException("Session Expired!");*/
+			
 			username = Constants.DEFAULT_USER;
 			String scope = Constants.DEFAULT_SCOPE;
 
 			httpSession.setAttribute(ScopeHelper.USERNAME_ATTRIBUTE, username);
 			session = SessionManager.getInstance().getASLSession(
 					httpSession.getId(), username);
-			session.setScope(scope);*/
+			session.setScope(scope);
 			
 		} else {
 			session = SessionManager.getInstance().getASLSession(
diff --git a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java
index d34e3b6..dbb3521 100644
--- a/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java
+++ b/src/main/java/org/gcube/portlets/user/td/gwtservice/server/TDGWTServiceImpl.java
@@ -4101,7 +4101,7 @@ public class TDGWTServiceImpl extends RemoteServiceServlet implements
 	/**
 	 * 
 	 * @param service
-	 * @param deleteColumnSession
+	 * @param addColumnSession
 	 * @return
 	 * @throws TDGWTServiceException
 	 */