I notice that there is a pan law setting in the RME preferences that defaults to -6db. Shoul I leave that alone? I have been setting the pan law in Sonar and I'm wondering if having it set both places could cause problems with the mix later.
 
Thanks.

I set RME, DAWS & any software so that they all use the same pan law.

Really, it's a different environment, so you should pick what you want for what you're doing with it.
 
When I listen to mixes made in Sonar through the RME, it doesn't matter what the pan law in RME is because the mix is straight stereo panned center.
 
When I'm mixing a show using total mix while recording it, then the RME Pan Law will be in play as I pan things left and right and center. So... Set it for what you want it to be in that case.
 
Does this help? The RME Pan law should have 0 effect when listening to a pair of stereo outs from Sonar.
 
Edit: The administrator is Matthias Carstens who is RME Head of Design. In this link, he talks about pan law ...
http://www.rme-audio.de/forum/viewtopic.php?id=18079

Thanks that answers my question.  I was afraid the pan law was applied twice.