An error occured while attaching module (Dynamicweb.Frontend.Content)

System.NullReferenceException: Object reference not set to an instance of an object.
   at PostaTemplateExtenders.StampsProductTemplate.ExtendTemplate(Template Template) in C:\inetpub\Library\Sendistovan\PostaPageTemplateExtender\PostaPageTemplateExtender\StampsProductTemplate.cs:line 134
   at Dynamicweb.eCommerce.Frontend.Renderer.RenderProductTemplateExtendersOriginal(Product Product, Template Template)
   at Dynamicweb.eCommerce.Frontend.Renderer.RenderProductTemplateExtenders(Product Product, Template Template)
   at Dynamicweb.eCommerce.Frontend.Renderer.RenderProduct(Product Product, Boolean ExtendedProperties, Template Template, Int32 loopCounter, Boolean renderRelated, String productURL)
   at Dynamicweb.eCommerce.Frontend.Renderer.RenderVariantCombinations(Product product, Template ParentTemplate, String LoopName)
   at Dynamicweb.eCommerce.Frontend.Renderer.RenderProduct(Product Product, Boolean ExtendedProperties, Template Template, Int32 loopCounter, Boolean renderRelated, String productURL)
   at Dynamicweb.eCommerce.Frontend.Renderer.RenderProducts(ProductCollection Products, Template ParentTemplate, String LoopName, Int32 LoopCounter, Boolean renderRelated)
   at Dynamicweb.eCommerce.Frontend.Renderer.RenderProducts(ProductCollection Products, Template ParentTemplate)
   at Dynamicweb.eCommerce.Frontend.Renderer.RenderProducts(ProductCollection Products)
   at Dynamicweb.eCommerce.Frontend.Frontend.ListProducts(ProductCollection products, String groupsIdent, Boolean hasBeenSorted)
   at Dynamicweb.eCommerce.Frontend.Frontend.List(String groups)
   at Dynamicweb.eCommerce.Frontend.Frontend.EcomRender()
   at Dynamicweb.eCommerce.Frontend.Frontend.GetContent()
   at Dynamicweb.Frontend.Content.getModule(DataRow& ParagraphRow)
Tíðindi
19-03-2015
Í samband við sólarmyrkingina hevur Posta eitt serstempul 20.03.2015  
30-01-2015
30. januar 1975 gav danska postverkið út fyrstu føroysku frímerkini.  
18-12-2014
Útgávuætlanin fyri 2015 er nú tøk.  
24-09-2014
Fyrri heimsbardagi, Dollin, D-dagurin og jólaevangeliið mynda frímerkini hesa ferð.