使用EF Power Tools 错误参数 80070057解决方法

错误参数。（异常来自 HRESULT:0x80070057 （E_INVALIDARG））

An error occurred while trying to instantiate the dbcontext type TestDB2Context see the output window for details

public class ProductContext : DbContext
{
public ProductContext()
: base(@"Data Source=.;Initial Catalog=Product;Integrated Security=True")
{ }
static ProductContext()
{
Database.SetInitializer<ProductContext>(null);
}

public DbSet<Category> Categories { get; set; }
public DbSet<Product> Products { get; set; }

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Conventions.Remove<IncludeMetadataConvention>();
modelBuilder.Configurations.Add(new CategoryMap());
modelBuilder.Configurations.Add(new ProductMap());
}

并且config文件中的仍然保留！