diff --git a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/StatAlgoImporterController.java b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/StatAlgoImporterController.java
index 1bd6a15..3a1f39c 100644
--- a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/StatAlgoImporterController.java
+++ b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/StatAlgoImporterController.java
@@ -34,7 +34,10 @@ import com.google.gwt.user.client.Cookies;
 import com.google.gwt.user.client.Timer;
 import com.google.gwt.user.client.Window;
 import com.google.gwt.user.client.rpc.AsyncCallback;
+import com.sencha.gxt.widget.core.client.box.ConfirmMessageBox;
 import com.sencha.gxt.widget.core.client.container.BorderLayoutContainer;
+import com.sencha.gxt.widget.core.client.event.DialogHideEvent;
+import com.sencha.gxt.widget.core.client.event.DialogHideEvent.DialogHideHandler;
 
 /**
  * 
@@ -335,11 +338,34 @@ public class StatAlgoImporterController {
 	}
 
 	private void softwareCreateRequest() {
-		monitor = new StatAlgoImporterMonitor();
-		inputRequestType = InputRequestType.SoftwareCreate;
-		InputRequestEvent inputRequestEvent = new InputRequestEvent();
-		eventBus.fireEvent(inputRequestEvent);
-		Log.debug("SoftwareCreateRequest: " + inputRequestEvent);
+
+		final ConfirmMessageBox mb = new ConfirmMessageBox(
+				"Warning",
+				"The creation of new software will overwrite the possible"
+						+ " previous version and will require publication again."
+						+ " Do you want to proceed anyway?");
+		mb.addDialogHideHandler(new DialogHideHandler() {
+
+			@Override
+			public void onDialogHide(DialogHideEvent event) {
+				switch (event.getHideButton()) {
+				case NO:
+					break;
+				case YES:
+					monitor = new StatAlgoImporterMonitor();
+					inputRequestType = InputRequestType.SoftwareCreate;
+					InputRequestEvent inputRequestEvent = new InputRequestEvent();
+					eventBus.fireEvent(inputRequestEvent);
+					Log.debug("SoftwareCreateRequest: " + inputRequestEvent);
+					break;
+				default:
+					break;
+				}
+
+			}
+		});
+		mb.setWidth(300);
+		mb.show();
 	}
 
 	private void softwarePublish() {
diff --git a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/project/ProjectManager.java b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/project/ProjectManager.java
index 380e776..a649b61 100644
--- a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/project/ProjectManager.java
+++ b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/client/project/ProjectManager.java
@@ -320,9 +320,8 @@ public class ProjectManager {
 				});
 	}
 
-	public void createSofware(InputData inputData,
+	public void createSofware(final InputData inputData,
 			final StatAlgoImporterMonitor monitor) {
-		Log.debug("Create Software: " + inputData);
 
 		StatAlgoImporterServiceAsync.INSTANCE.createSoftware(inputData,
 				new AsyncCallback<Void>() {
diff --git a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/storage/ProjectArchiver.java b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/storage/ProjectArchiver.java
index e500796..08df800 100644
--- a/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/storage/ProjectArchiver.java
+++ b/src/main/java/org/gcube/portlets/user/statisticalalgorithmsimporter/server/storage/ProjectArchiver.java
@@ -10,13 +10,13 @@ import org.gcube.application.framework.core.session.ASLSession;
 import org.gcube.common.homelibrary.home.exceptions.InternalErrorException;
 import org.gcube.common.homelibrary.home.workspace.WorkspaceItem;
 import org.gcube.portlets.user.statisticalalgorithmsimporter.shared.exception.StatAlgoImporterServiceException;
+import org.gcube.portlets.user.statisticalalgorithmsimporter.shared.project.MainCode;
 import org.gcube.portlets.user.statisticalalgorithmsimporter.shared.project.Project;
 import org.gcube.portlets.user.statisticalalgorithmsimporter.shared.project.ProjectFolder;
 import org.gcube.portlets.user.statisticalalgorithmsimporter.shared.workspace.ItemDescription;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-
 /**
  * 
  * @author Giancarlo Panichi email: <a
@@ -45,30 +45,34 @@ public class ProjectArchiver {
 						.getItemDescription().getId());
 
 	}
-	
-	public static boolean existProjectInFolder(ItemDescription newProjectFolder,
-			ASLSession aslSession) throws StatAlgoImporterServiceException {
+
+	public static boolean existProjectInFolder(
+			ItemDescription newProjectFolder, ASLSession aslSession)
+			throws StatAlgoImporterServiceException {
 		FilesStorage filesStorage = new FilesStorage();
-		return filesStorage.existProjectItemOnWorkspace(aslSession.getUsername(), newProjectFolder.getId());
-		
+		return filesStorage.existProjectItemOnWorkspace(
+				aslSession.getUsername(), newProjectFolder.getId());
+
 	}
-	
 
 	public static Project readProject(ItemDescription newProjectFolder,
 			ASLSession aslSession) throws StatAlgoImporterServiceException {
 		FilesStorage filesStorage = new FilesStorage();
 		InputStream inputStream = filesStorage.retrieveProjectItemOnWorkspace(
 				aslSession.getUsername(), newProjectFolder.getId());
-		
+
 		XMLDecoder xmlDecoder = new XMLDecoder(inputStream);
 		Project project = (Project) xmlDecoder.readObject();
 		xmlDecoder.close();
-	
-		WorkspaceItem projectFolderItem=filesStorage.retrieveItemInfoOnWorkspace(aslSession.getUsername(), newProjectFolder.getId());
+
+		WorkspaceItem projectFolderItem = filesStorage
+				.retrieveItemInfoOnWorkspace(aslSession.getUsername(),
+						newProjectFolder.getId());
 		try {
 			newProjectFolder.setId(projectFolderItem.getId());
 			newProjectFolder.setName(projectFolderItem.getName());
-			newProjectFolder.setOwner(projectFolderItem.getOwner().getPortalLogin());
+			newProjectFolder.setOwner(projectFolderItem.getOwner()
+					.getPortalLogin());
 			newProjectFolder.setPath(projectFolderItem.getPath());
 			newProjectFolder.setType(projectFolderItem.getType().name());
 		} catch (InternalErrorException e) {
@@ -77,16 +81,48 @@ public class ProjectArchiver {
 			throw new StatAlgoImporterServiceException(e.getLocalizedMessage());
 
 		}
-		
-		if(project!=null && project.getProjectFolder()!=null &&
-				newProjectFolder.compareInfo(project.getProjectFolder().getItemDescription())){
-			
+
+		if (project != null
+				&& project.getProjectFolder() != null
+				&& newProjectFolder.compareInfo(project.getProjectFolder()
+						.getItemDescription())) {
+
 		} else {
 			project.setProjectFolder(new ProjectFolder(newProjectFolder));
 			archive(project, aslSession);
 		}
+
+		if (project != null && project.getMainCode() != null
+				&& project.getMainCode().getItemDescription() != null) {
+			WorkspaceItem mainCodeItem = filesStorage
+					.retrieveItemInfoOnWorkspace(aslSession.getUsername(),
+							project.getMainCode().getItemDescription().getId());
+			ItemDescription newMainCodeItemDescription;
+			try {
+				newMainCodeItemDescription = new ItemDescription(
+						mainCodeItem.getId(), mainCodeItem.getName(),
+						mainCodeItem.getOwner().getPortalLogin(),
+						mainCodeItem.getPath(), mainCodeItem.getType().name());
+			} catch (InternalErrorException e) {
+				logger.error(e.getLocalizedMessage());
+				e.printStackTrace();
+				throw new StatAlgoImporterServiceException(
+						e.getLocalizedMessage());
+
+			}
+			if (newMainCodeItemDescription.compareInfo(project.getMainCode()
+					.getItemDescription())) {
+			} else {
+				project.setMainCode(new MainCode(newMainCodeItemDescription));
+				archive(project, aslSession);
+			}
+
+		} else {
+			project.setProjectFolder(new ProjectFolder(newProjectFolder));
+			archive(project, aslSession);
+		}
+
 		return project;
 	}
-	
-	
+
 }