VB Express error - Strange solution

Today I was working with VB express and did the following

• Created a new permission set
• Created a new code group
• Associated the code group with the permission set.
• Created a strong name for the simple windows app that I was working with.
• Associated the assembly with the code group

Then after doing such simple things got the following error while trying to debug

And then what next ?
Googled .
Found in the MSDN forums that there were many souls like me who had racked their brains on this.
Solution:
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Turn on the Terminal Services from the Control Panel->Settings->Services.
And the VB Express works like a charm as before .
Strange isnt it ? I will research more if you find why this is so. Any of you reading this can post comments on this.

Local SQL Server 2005 DB and Enterprise DAB

Experiment1
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Add a SQL database from the Solution explorer using Add New item.
Once you add it , the connection string would be present in the app.config
add name="My.MySettings.Database2ConnectionString" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=DataDirectory\Database2.mdf;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient"

Use the Enterprise Library DAB and change the default database to point to My.MySettings.Database2ConnectionString
dataConfiguration defaultDatabase="My.MySettings.Database2ConnectionString"

Experiment2
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You can also have a .MDF and a .LDF file in the file system as in
C:\Ambarish\Database2.mdf

Change the connection string in the app.config to
add name="My.MySettings.Database2ConnectionString" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Ambarish\Database2.mdf;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient"

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Use the MVC pattern ( here only the controller code is present ) to connect to the DB

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Public Sub GetTable1Data(ByRef ds As DataSet)
Dim db As Database
Dim strCommand As String
Dim dbCommand As DbCommand
Try
db = DatabaseFactory.CreateDatabase()
strCommand = "dbo.uspGetDataTable1"
dbCommand = db.GetStoredProcCommand(strCommand)
ds = db.ExecuteDataSet(dbCommand)
Catch ex As Exception
Throw ex
Finally
db = Nothing
End Try
End Sub

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