Data Source cannot be created because in new version of designer are changed properties of data sources.
For example: (screen1.png --> right window) I chose salesforce as example. There are the same 3 important parameters in Data Source Properties for all drivers (why?) :
and for salesforce we have these parameters in connection profile : (screen2.png)
So how should I create data source when I do not have a "connection-url" (or how I can create a connection-url). The same problem is with more data sources. For example google spreadsheet (screen2.png) there are 4 properties.