What happened here everything was working fine just a minute ago at a loss here.
Do you still have this problem? It's odd that you can see the tables but run into this error when you try to use the EF designer. is NONE-E81F1BF7DC\MyUsername the actual account you use to log in to Windows?
Also, did you attach the database to SQL Server or are you running it from App_Data?
I do not think I am over the 30 day limit also I can long into the database using SQL Managenment Studio no problem
Which 30 days are you talking about? SQL Express is free and should never expire.
it is like it knows that the database is there but can not see it.
Have you tried running SQL Server Management Studio as an Administrator? (Right-click and choose Run As Administrator).