Ever since I updated Windows the other day, the volume on my interface is being reset to zero when Sonar loads a project. It's an RME Babyface so it has no "physical" volume control, just a free spinning rotary on the front which has the same functionality as using the fader in the interface software. This never used to happen. Anyone else? 

Hey, James,
I have the Babyface Pro version and ran the very latest Windows updates last evening but did not test with Splat afterwards, so I'll check later on and let you know if I can reproduce the issue. 
 
Sly

Don't use the RME but I did have to uninstall then install my audio driver after the update.

Duplicate

I have had to reinstall audio drivers in the past after some Windows Update maintenance, as well.
 
I also used to have occasional issues with certain sounds from certain synths, because they were reacting to the Sonar default of Zero Out All Controllers.....  
 
And, I also used to have issues with some of the Native Instruments synths and volumes changing themselves and overriding any changes to volume that I had made, until I learned for those instances, to go into the Instrument Options>Controller (for Kontakt and Battery there is a wrench icon to get you to those settings for a given loaded instrument) - I would remove the check from the parameter labeled: "Accept standard controllers for volume and pan".  I then saved that change to that instrument.
 
Bob Bone

Latest update messed up my Addictive Drums installation. When loaded Sonar, got a message that the computer ID was not registered to use the AD products I had bought/installed. 
 
Had to launch AD Installer. Had to uninstall/reinstall my computer in the AD Installer. Works fine now. 

Ok thanks, maybe I'll try reinstalling the drivers (or check if there's an update). 
 
Bob, I used to have terrible trouble with Sonar hosing the settings on Native Instruments synths. I'd load a project and as soon as I hit play, everything on the synth went to the default value. It also happened a lot with Waves plugins. I went back and forth with the Bakers about it and eventually a fix was rolled out which seemed to fix the problem with NI synths, but at some point over the last few months the problem has come back with some Waves plugins (especially the Q10 EQ and the SSL Channel Strip) and they're now seeing their settings hosed randomly upon loading projects. It's a major problem with Sonar and one of the main reasons why I was constantly thinking about jumping ship - I lost so many hours of work because of these bugs. Very hard to pin them down to write a meaningful bug report as well. The crushing blow is that I believe I had come across a clue as to why it was happening, and was able to send this reproducible clue to the Bakers. I really had my hopes up for an impending fix, and then boom! No more Cakewalk. Sigh!

Please give the Instrument Options tweak I posted a try - I use NI Kontakt and Battery in almost every project I create, and one I set each loaded instrument (that had a problem) per my post, I have never had another issue like that.
 
Worth a shot, 
 
Bob Bone

robert_e_bone
Please give the Instrument Options tweak I posted a try - I use NI Kontakt and Battery in almost every project I create, and one I set each loaded instrument (that had a problem) per my post, I have never had another issue like that.
 
Worth a shot, 
 
Bob Bone

That wouldn't help me with plugins like Q10 though would it?

You should always take an image of your drive before doing any Windows update.  Or simply never do an update.  You are playing Russian Roulette since no fix to rescue you will be forthcoming.