Hi all!
I've started creating a standard web project, and I've set up a MS SQL database. I'm using Linq and the page works great.
Now I want to (or have to) add password protection and role management. I'm able to create users and log in, but I'm NOT able to manage the user by going to /Account/Manage.aspx. It crashes with these errors:

and...

My connection string is:
<connectionStrings>
<add name="ApplicationServices" connectionString="Data Source=myserver.no;Initial Catalog=stoydata;User Id=user1;Password=passord1" providerName="System.Data.Sqlclient"/>
</connectionStrings>
The InnerException message is:
"The provider did not return a ProviderManifestToken string. "
I've searched the web but have yet to find anything useful.
Where do I start?