I have a block that contains a block.  When I add a new block to this block container, it doesn't show and therefore can't be published.

The first class below is my block container.  Second is the block that the container holds.  Third is the page.  

I've basically copied code that a previous developer used to do something similar.  What am I missing?

Thanks,

Tim

    [ContentType(DisplayName = "SelectableColorsBlocks", GUID = "ca4580f9-3e4d-4e24-8cb8-50a76d4d54c7", Description = "")] 

    public class SelectableColorsBlocks : BlockData 
    { 
        [Display( 
         Name = "Listing Title", 
         Description = "", 
         GroupName = SystemTabNames.Content, 
         Order = 10)] 
        public virtual string ListingTitle { get; set; } 

        [Display( 
          Name = "Selectable Colors Blocks", 
          GroupName = SystemTabNames.Content, 
          Order = 20)] 
        [AllowedTypes(typeof(SelectableColorsBlock))] 
        public virtual ContentArea SelectableColorsBlocksArea { get; set; } 
    } 
 

    [ContentType(DisplayName = "SelectableColorBlock", 
        GUID = "5a3b16a1-444b-47ac-bacc-b979d85c0661", 
        Description = "Block to contain selectable background color")] 
    public class SelectableColorsBlock : BlockData 
    { 
        [Display( 
            Name = "Icon", 
            Description = "Icon", 
            GroupName = SystemTabNames.Content, 
            Order = 15)] 
        public virtual Url Icon { get; set; } 

        [CultureSpecific] 
        [Display( 
            Name = "Title", 
            Description = "Title", 
            GroupName = SystemTabNames.Content, 
            Order = 10)] 
        public virtual string Title { get; set; } 

        [ClientEditor(ClientEditingClass = "dijit/ColorPalette")] 
        [Display( 
            Name = "Background color", 
            Description = "Select background color", 
            GroupName = SystemTabNames.Content, 
            Order = 50)] 
        public virtual string BackgroundColor { get; set; } 

        [ClientEditor(ClientEditingClass = "dijit/ColorPalette")] 
        [Display( 
            Name = "Text color", 
            Description = "Select text color", 
            GroupName = SystemTabNames.Content, 
            Order = 60)] 
        public virtual string TextColor { get; set; } 

        [CultureSpecific] 
        [Display( 
            Name = "Main body", 
            Description = "Main body of block ", 
            GroupName = SystemTabNames.Content, 
            Order = 100)] 
        public virtual XhtmlString MainBody { get; set; } 
    } 

 

    [ContentType(DisplayName = "SelectableColorsPage", GUID = "fbbeee2c-02b2-468d-9eb1-31f616f5943a", Description = "")] 
    public class SelectableColorsPage : SitePageData 
    { 
        [Display( 
            Name = "Page Banner", 
            Description = "Page Banner", 
            GroupName = Global.GroupNames.PageBanner, 
            Order = 40)] 
        public virtual ContentReference PageBanner { get; set; } 

        [Display( 
            Name = "Image", 
            Description = "Content Image", 
            GroupName = SystemTabNames.Content, 
            Order = 20)] 
        public virtual Url ContentImage { get; set; } 

        [Display( 
            Name = "Title", 
            Description = "Title", 
            GroupName = SystemTabNames.Content, 
            Order = 50)] 
        public virtual string Title { get; set; } 

        [CultureSpecific] 
        [Display( 
            Name = "Main body", 
            Description = "The main body will be shown in the main content area of the page, using the XHTML-editor you can insert for example text, images and tables.", 
            GroupName = SystemTabNames.Content, 
            Order = 1)] 
        public virtual XhtmlString MainBody { get; set; } 

        [Display( 
            Name = "Selectable Colors Block", 
            Description = "", 
            GroupName = SystemTabNames.Content, 
            Order = 10)] 
        public virtual SelectableColorsBlocks SelectableColorsBlocks { get; set; } 
    }