DocuSign.eSign.dll parameter not valid

I am currently working on a project that requires me to send and receive contracts via DocuSign and then upload the completed contracts to a web service. I have completed the sending and receiving parts of the development but am unable to add a web service reference (I am fairly new at using web services) due to the following error:

The Connect Services component 'Microsoft WCF Web Service Reference Provider' failed: (HRESULT:0x80070057) The specified parameter value 'DocuSign.eSign.dll' is not valid. Parameter Name: 'packageName'

How do I go about resolving this issue? Where is a good place to start?

DocuSign.eSign.dll is not a web service but a NuGet package. You add it to your project just like you would add other DLL files from Microsoft or third party. See step-by-step in our guide on using the DocuSign eSignature SDK.

Or, an easier approach would be to use our Quickstart that sets it all for you automatically.