diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/client/DataMinerManagerController.java b/src/main/java/org/gcube/portlets/user/dataminermanager/client/DataMinerManagerController.java
index 8da248e..03d1eff 100644
--- a/src/main/java/org/gcube/portlets/user/dataminermanager/client/DataMinerManagerController.java
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/client/DataMinerManagerController.java
@@ -452,8 +452,8 @@ public class DataMinerManagerController {
 							EventBusProvider.INSTANCE.fireEvent(new SessionExpiredEvent());
 						} else {
 							UtilsGXT3.alert("Error",
-									"Error retrieving operators classification! " + caught.getLocalizedMessage());
-							Log.error("Error retrieving operators classification: " + caught.getLocalizedMessage());
+									"The VRE currently has problems loading all required operators. We apologize for this inconvenience.");
+							Log.error("The VRE currently has problems loading all required operators. We apologize for this inconvenience: " + caught.getLocalizedMessage());
 							caught.printStackTrace();
 						}
 					}