Commerce Starter Kit error trying to delete SKU

[DouglasABaker]

I have deleted SKU, discountPercent and modelNumber from the CSK, all
stored procedures and the databases. After that I'm still getting this
error in catalogManager.vb:

Public Shared Function AddProduct(ByVal product As Product) As Integer
Return
Commerce.Providers.CatalogProvider.Instance.Produc tInsert(product.CategoryID,
product.ModelName, product.ProductImage, product.UnitCost,
product.Description, product.AmountOnHand, product.Weight)
End Function

Argument not specified for parameter 'SKU' of 'Public Must Override
Function ProductInsert(categoryID as integer,... sku as String,...).

Even though I delete SKU from everywhere it still comes up in the
error! Somebody please help me out, thanks
Doug