I'm having a problem that looks like a threading issue (and of course it appeared on a Friday afternoon!)

We have a set-up with nodes (document types without template) as properties on a member:

• Departments ... Department
• Places ... Place
• Categories ... Category

And data types as multinode treepicker (Department is single value), that points to each of the parent nodes. The member can then select his/her own setting to be displayed on their member info-page.

The code that gets the properties is placed in two separate static classes but with instance objects of umbracohelper to get the typed content for the node:

    public static IEnumerable<Place> GetAllPlaces()
    {
        var nodeId = AppSettings["PlacesNodeId"];
        var placeAlias = AppSettings["PlaceAlias"];
        return new UmbracoHelper(UmbracoContext.Current).TypedContent(nodeId).Children
                                                            .Where(child => child.DocumentTypeAlias == placeAlias)
                                                            .Select(child => new Place { Id = child.Id, Name = child.Name });
    }

    public static IEnumerable<Category> GetAllCategories(){...}

And the calling code:

var allPlaces = GetAllPlaces().OrderBy(place => place.Name);
var allCategories = GetAllCategories().OrderBy(category => category.Name);

But... Yet the same code and stucture/set-up, Places return the values but not Categories!

In the debugger/quick watch window, the childs-node states "all threads must be running" but hitting reevaluate about 4 times the childnodes are displayed.

When moving the non working code (the one for Categories) to the partialview (for testing), it works without any problem.

So next (first thing on Monday morning) I'll try to have the code in non static classes or refactor into one "GetProperties" class, but for future reference I'd like to know if this is at "non thread safe"-issue ore something else?

(I'm also fairly new to Umbraco development.)