diff --git a/src/main/java/org/gcube/portlets/user/workspace/client/AppController.java b/src/main/java/org/gcube/portlets/user/workspace/client/AppController.java
index 4b1458e..c8914c4 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/client/AppController.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/client/AppController.java
@@ -1363,32 +1363,38 @@ public class AppController implements SubscriberInterface {
 	}
 
 	@Override
-	public void addedFile(String itemIdentifier, FileModel parent, WS_UPLOAD_TYPE uploadType) {
+	public void addedFile(String itemIdentifier, String parentId, WS_UPLOAD_TYPE uploadType) {
 //		updateStoreByRpc(parent);
-		if(parent==null){
-			GWT.log("addedFile skipping, parent is null");
+		if(parentId==null){
+			GWT.log("addedFile skipping, parentId is null");
 			return;
 		}
 		
 		//UPDATE GRID ONLY IF TREE AND GRID DISPLAYING THE SAME PARENT 
-		if(parentIsBreadcrumbLastParent(parent)){
+		if(parentIsBreadcrumbLastParent(parentId)){
 		
 			if(uploadType.equals(WS_UPLOAD_TYPE.File)){
-				GWT.log("Calling addFileToStoreById "+parent.getIdentifier());
-				addFileToStoreById(itemIdentifier, parent);
+				GWT.log("Calling addFileToStoreById "+parentId);
+				addFileToStoreById(itemIdentifier, parentId);
 			}else{ //is ARCHIVE
-				updateStoreByRpc(parent);
+				updateStoreByRpc(wsPortlet.getToolBarPath().getLastParent());
 			}
 		}
 	}
 	
-	private boolean parentIsBreadcrumbLastParent(FileModel parent){
-		GxtBreadcrumbPathPanel breadCrumb = this.wsPortlet.getToolBarPath();
-		FileModel breadParent = breadCrumb.getLastParent();
-		return ((breadParent!=null) && (parent!=null) && (breadParent.getIdentifier().compareTo(parent.getIdentifier())==0));
+	
+	/**
+	 * Parent is breadcrumb last parent.
+	 *
+	 * @param parentId the parent id
+	 * @return true, if successful
+	 */
+	private boolean parentIsBreadcrumbLastParent(String parentId){
+		FileModel breadParent = wsPortlet.getToolBarPath().getLastParent();
+		return ((breadParent!=null) && (parentId!=null) && (breadParent.getIdentifier().compareTo(parentId)==0));
 	}
 	
-	private void addFileToStoreById(String itemIdentifier, FileModel parent){
+	private void addFileToStoreById(String itemIdentifier, String parentId){
 		
 		appContrExplorer.getRpcWorkspaceService().getItemForFileGrid(itemIdentifier, new AsyncCallback<FileGridModel>() {