Workflow wont compile when i use ConfigurationManager.ConnectionStrings[""]

the following code fails to compile. Could not create activity of Type 'WorkflowConsoleApplication1.Workflow1'. System.NullReferenceException. Object reference not set to an instance...when i double click on the error list in VS i get a message box "Cannot open file 'c:\bla...'. Verify that the file exists and try again..."

//WF BETA 2.2

Steps to recreate:

create a new sequential console app project. drop a code activity with some code in the activity code. Add reference to System.Configuration dll. add an App.config file with the foll. 2 settings

<appSettings>

<add key="myDBConn" value="connectionstring goes here"></add>

</appSettings>

<connectionStrings>

<add name="NewConn" connectionString="bla bla bla"></add>

</connectionStrings>

in Workflow1.cs code beside add the following code.

using System.Configuration;

//inside the Workflow1 Class add

string connString = ConfigurationManager.AppSettings["myDBConn"];

string newConnString = ConfigurationManager.ConnectionStrings["NewConn"].ConnectionString;

// if i comment out the last statement in Workflow1.cs but add it to Program.cs it works fine.

how come appSettings work inside the WF but not connectionStrings setting

thanks

-vt