Send with DocuSign button in Lightning on Salesforce Winter '17 error

Issue

Clicking the Send with DocuSign button in Lightning on Salesforce Winter '17, the following error occurs: "The SourceID value for this DocuSign Custom Button is invalid."

Possible Causes

Change that was made to access checks in Salesforce Winter '17 that can affect Lightning Components.

Solution

This issue has been fixed. Please update to DocuSign eSignature for Salesforce 6.6.2 or newer.