Outsystems 11: Error opening module

Hi,

I'm trying to access my data module and instead i get the error message saying that: Error opening module

When Clicking on "More information", this is what I get (see below). Can anybody make sens of this?

System.Exception: Error lazy loading NodesNotShownInESpaceTree of /UserActions.RTYtq4xhTEyToMAxL8jitg in eSpace 'Last_Mim_Data' ---> ServiceStudio.Model.ESpace+LazyLoadException: Error lazy loading NodesNotShownInESpaceTree of /UserActions.RTYtq4xhTEyToMAxL8jitg in eSpace 'Last_Mim_Data' ---> System.InvalidOperationException: Could not find object at /Entities.5Q1LAMUeREG0yLKAy1DXjA/Attributes.tbJCFWOt_UmuguTo49PWzA: Object not set
   at DebugExtensions.MustBeSet(Object obj, String context)
   at ServiceStudio.Model.ESpace.OmlLoader.ForceLoadOfReferedButNotLoadedObjects()
   at ServiceStudio.Model.ESpace.Loader`1.Execute(CollectionIndex collectionIndex, XElementReader reader, Func`1 ownerESpaceGetter, Action action, Boolean closeReader)
   at ServiceStudio.Model.ESpace.OmlLoader.LazyLoadCollection(AbstractObject parent, CollectionIndex collectionIndex)
   at ServiceStudio.Model.ESpace.<>c__DisplayClass474_0.<DoWithoutTrackingChanges>b__0()
   at ServiceStudio.Model.ESpace.DoWithoutTrackingChanges[RetType](Func`1 action)
   at ServiceStudio.Model.ESpace.DisableReadOnlyModeIn(Action action)
   at ServiceStudio.Model.ESpace.LoadCacheableCollection(AbstractObject parent, CollectionIndex collectionIndex)
   --- End of inner exception stack trace ---
   at ServiceStudio.Model.ESpace.LoadCacheableCollection(AbstractObject parent, CollectionIndex collectionIndex)
   at ServiceStudio.Model.AbstractObject.EnsureCacheableCollectionIsLoaded(Func`1 collectionGetter, CollectionIndex collectionIndex)
   at ServiceStudio.Model.AbstractFlow.TryGetChildCollection(CollectionIndex collectionIndex, Boolean skipUnloadedObjects)
   at ServiceStudio.Model.Flows.AbstractUserAction.TryGetChildCollection(CollectionIndex collectionIndex, Boolean skipUnloadedObjects)
   at ServiceStudio.Model.AbstractObject.GetChildCollection(CollectionIndex collectionIndex, Boolean skipUnloadedObjects)
   at ServiceStudio.Model.ModelExtensions.<GetAllChildrenOfType>d__49`1.MoveNext()
   at OutSystems.RuntimeCommon.CollectionsExtensions.Apply[Type](IEnumerable`1 collection, Action`1 action)
   at ServiceStudio.Model.ESpace.Upgrader.ESpaceUpgrader11x.UpgradesFor_11x(ESpace eSpace, IInformationForESpaceUpgrade informationForUpgrader)
   at ServiceStudio.Model.ESpace.Upgrader.InnerUpgrade(ESpace eSpace, Boolean recoverMode, IInformationForESpaceUpgrade informationForUpgrader)
   at ServiceStudio.Model.ESpace.Upgrader.Upgrade(ESpace eSpace, Boolean recoverMode, IInformationForESpaceUpgrade informationForUpgrader)
   at ServiceStudio.Model.ESpace.Load(Stream stream, String initialLastSavePath, Boolean isUnregisteredESpace, Boolean readOnlyMode, Boolean recoverMode, ObjectKey newKeyForClone, String productKey, Nullable`1 forceModifiedFlag, IInformationForESpaceUpgrade informationForUpgrader)
   at ServiceStudio.Model.ESpace.Load(Byte[] bytes, String initialLastSavePath, String productKey, Nullable`1 forceModifiedFlag, IInformationForESpaceUpgrade informationForUpgrader)
   at ServiceStudio.Presenter.AggregatorPresenter.#D5b.#z5b(IInformationForESpaceUpgrade informationForESpaceUpgrade)
   at ServiceStudio.Presenter.AggregatorPresenter.#D5b.#A5b(IProgressController controller)
   at ServiceStudio.ViewImplementation.Framework.ProgressDialog.<>c__DisplayClass26_0.<RunWorkerThread>b__0()
   --- End of inner exception stack trace ---
   at ServiceStudio.ViewImplementation.Framework.ProgressDialog.RunWorkerThread(PresenterContext presenterContext, Action optionalPreOperationThatCanBeSafelyAborted, Action`1 operation, Action customPreOperationAborter)
   at ServiceStudio.ViewImplementation.WPFViewImplementationProvider.<>c__DisplayClass64_0.<DoVerySlowOperation>b__1()
   at ServiceStudio.ViewImplementation.WPFViewImplementationProvider.DoSlowOperation[ReturnType](IAggregatorView aggregatorView, Func`1 operation)
   at ServiceStudio.Presenter.RuntimeImplementation.#1s3.#Lec()
   at ServiceStudio.Presenter.AggregatorPresenter.DisableKeyboardInteractionsIn(Action action)
   at ServiceStudio.Presenter.RuntimeImplementation.DoVerySlowOperation(IAggregatorPresenter aggregator, String title, Action`1 optionalPreOperationThatCanBeSafelyAborted, Action`1 operation, Action customPreOperationAborter)
   at ServiceStudio.Presenter.AggregatorPresenter.#q5b.#o5b()

Hi Gaelius,

I recommend you contact Outsystems support.

Regards,

Marcelo

Already have the latest revision of Service studio installed? Earlier versions give a lot of problems sometimes.

You can also try this thing, maybe it solves something for you : 

https://success.outsystems.com/Support/Unlisted/Support_Team/Unsorted/Recover_an_eSpace_with_Service_Studio

regards

Wim.