Not that I know but in this vain.... Sonar works REF4 system wide...
you can have this issue. if you have SW Ref4 System wide you have to go into the Control panel / programs and features / Repair REF4 System Wide. If anyplace on your computer, something starts running odd and you are using System wide... try and repair....
ALSO. ProTools First will take over. you need to reboot after you use it.
I'm guessing we are all trying new DAWs and related software. We all know how software can be.
peace!