After creating a Business Data Connectivity Service Application in SharePoint 2010 I wasn’t able to access the service application with the BDC models, external systems and external content types.
I tried to deploy a Visual Studio Solution by hitting F5. The error message I received was: "Error occurred in deployment step 'Add Solution': There are no addresses available for this application.” Clicking the BCS under "Manage service applications" got the same error.
Check that the service under "Manage services on server" is running. If the error occures despite the service is running, restart the IIS with "iisreset".