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

System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
at System.Collections.Generic.List`1.get_Item(Int32 index)
at Dynamicweb.eCommerce.Products.GroupCollection.get_Item(Int32 Index)
at Innovadis.Dynamicweb.Extenders.INNO_ProductTemplateExtender.ExtendTemplate(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, Int32 quantity, Int32 wishListID, Boolean renderPublicList, Int32 orderLineOfProductCount)
at Dynamicweb.eCommerce.Frontend.Renderer.RenderProduct(Product Product, Boolean ExtendedProperties)
at Dynamicweb.eCommerce.Frontend.Frontend.RenderProduct(Product prod)
at Dynamicweb.eCommerce.Frontend.Frontend.EcomRender()
at Dynamicweb.eCommerce.Frontend.Frontend.GetContent()
at Dynamicweb.Frontend.Content.GetModule(DataRow& ParagraphRow)