Previous version doesn't have this problem, only in 1.80. Frustrated.
1.8 has a very different data access layer (Entity Framework vs vanilla ADO.NET).
All seems to be working for me so double check against my post. If still having trouble post again with the symptoms and hopefully someone will be able to help.
I just ran into this. I have the base nop in a master project then I have clients in their own projects with just the nopcommercestore project which References the master builds bin folder dlls
What I did was take the NopEntities connection string from the app.config file in Nop.BusinessLogic root and added it to my connection string in the ConnectionStrings.config file
I only need it locally since it only throws the error in my custom import. so ill remove it when I go live with the site