CRM2011 Visual Studio workflow template not accepting the "CRM Discovery Service Name"

I am trying to use the CRM 2011 workflow template in Visual Studio 2010 and when it's asks for "CRM Discovery Service Name" I have entered "dev.crm.dynamics.com" and tried using HTTP and HTTPS but it always tells me:

"Metadata contains a reference that cannot be resolved: "http://dev.crm.dynamics.com/XRMServices/2011/Discovery.svc?wdl"".

Is there something silly I'm not realizing?

*EDIT* If I use "<companyname>.api.crm.dynamics.com" with HTTP then it gets past the connect part. But upon entering my user credentials it spits out an error of "Value cannot be null. Parameter name: CurrentServiceEndpoint"