Login Control & Membership in 2005 Express

[nedk]

I am getting the following error when attempting to login to a site
where I am trying to use Membership. Does anyone know why I am getting
this error and how to fix it. Thanks in advance. -Ned


Server Error in '/testweb' Application.
--------------------------------------------------------------------------------

This feature is not supported at the configured trust level.
Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: This feature is not
supported at the configured trust level.

Source Error:

An unhandled exception was generated during the execution of the
current web request. Information regarding the origin and location of
the exception can be identified using the exception stack trace below.


Stack Trace:


[HttpException (0x80004005): This feature is not supported at the
configured trust level.]
System.Web.Security.Membership.Initialize() +222
System.Web.UI.WebControls.LoginUtil.GetProvider(String providerName)
+32
System.Web.UI.WebControls.Login.OnAuthenticate(AuthenticateEventArgs
e) +130
System.Web.UI.WebControls.Login.AttemptLogin() +94
System.Web.UI.WebControls.Login.OnBubbleEvent(Object source,
EventArgs e) +101
System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs
args) +35
System.Web.UI.WebControls.Button.OnCommand(CommandEventArgs e) +115
System.Web.UI.WebControls.Button.RaisePostBackEvent(String
eventArgument) +134

System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String
eventArgument) +7
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl, String eventArgument) +11
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
+33
System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
+5670