Hi,

I receive a "Object reference not set to an instance of an object" when calling FindPagesWithCriteria.

I'm trying to select pages based on categories:

PropertyCriteriaCollection criteriaCollection = new PropertyCriteriaCollection();
PropertyCriteria criteriaFindImages = new PropertyCriteria();
criteriaFindImages.Condition = CompareCondition.Equal;

string selectedFolder;
selectedFolder = dropDownCategories.Items[dropDownCategories.SelectedIndex].Text;
criteriaFindImages.Value = selectedFolder;
criteriaFindImages.Type = PropertyDataType.Category;

criteriaCollection.Add(criteriaFindImages);

PageDataCollection pages = new PageDataCollection();
Debug.WriteLine(GetPage(PageReference.StartPage).PageName);
Debug.WriteLine(criteriaCollection.Count);
Debug.WriteLine(CurrentPage.LanguageBranch);

pages = DataFactory.Instance.FindPagesWithCriteria(PageReference.StartPage, criteriaCollection);

The error-message I receive:

[NullReferenceException: Object reference not set to an instance of an object.]
   EPiServer.DataAccess.PageDB.IsMetaData(String name) +182
   EPiServer.DataAccess.PropertySearchDB.ExecuteCriteria(Int32 pageID, PropertyCriteria criteria, String languageBranch) +984
   EPiServer.DataAccess.PropertySearchDB.CriteriaSearch(Int32 pageID, PropertyCriteria criteria, Boolean firstQuery, IList`1 pageLinks, String languageBranch) +39
   EPiServer.DataAccess.PropertySearchDB.FindPagesWithCriteria(Int32 pageID, PropertyCriteriaCollection criterias, String languageBranch) +277
   EPiServer.DataAbstraction.SearchPages.FindPagesWithCriteria(PageReference pageLink, PropertyCriteriaCollection criterias, String languageBranch, ILanguageSelector selector, AccessLevel requiredAccess) +145
   EPiServer.LocalPageStore.FindPagesWithCriteria(PageReference pageLink, PropertyCriteriaCollection criterias, String languageBranch, ILanguageSelector selector, AccessLevel requiredAccess) +40
   EPiServer.DataFactory.FindPagesWithCriteria(PageReference pageLink, PropertyCriteriaCollection criterias, String languageBranch, ILanguageSelector selector, AccessLevel requiredAccess) +210
   EPiServer.DataFactory.FindPagesWithCriteria(PageReference pageLink, PropertyCriteriaCollection criterias) +82
 

The same problem happens if I try this:

PropertySearchDB search = new PropertySearchDB();
IList refColl =
 search.FindPagesWithCriteria(PageReference.StartPage.ID, criteriaCollection, "sv"); 

 I'm using EPiServer 5.1.422.256.

Has anyone seen this problem before? Any clues how to solve it?

Best regards, 

Peter Bergqvist