I have no sinister motive. I have just been reading about problems with the Focusrite audio interfaces, a lot lately.
If you like Focusrite, and your unit works sastisfactorily for you, I'm glad for you, but I've been seeing a number of users post problems with their unit and SONAR, and as you say, Focusrite is attempting to address the issues, and the fact that they are addressing the issues, says to me the problem is with their drivers.
I like to have a variety of audio interfaces I can recommend to users when they come here asking for recommendations. Focusrire is one brand I would not recommend because of the user reports here. Sorry if that disturbs you, but I wish you the best with you and your experience with your Focusrire product.
And just to show you that I don't have any sinister agenda in mind when I chime into these Focusrite threads, I'll not chime in again unless I have some problem solving helpful info. I'll just follow to see what progress is being made, if any.