This was the same issue I reported a while back. I never did figure out what was going on, but I am able to run the Business Layer Generator on my own tables (just not Northwind).

>Oops. There is still a problem with the Business Layer Generator. When I click on certain tables such as Orders and Employees, it crashes VS. But tables such as Customers and Shippers are ok. So, please let me know when you have a fix ready, so I can continue the Jump Start exercises. Thanks.