Just got a win 7 64 bit machine and re-installed Sonar 6 PE as a 64 bit.  Session Drummer does not appear, even though it was checked in the installation dialogue. 

Does anyone know if SD2 is supported in 64 bit Sonar 6?

Thanks!

Chris Bates
i3@3.0GHz / 4GB RAM
Win  7 64 bit
Sonar 6 - 64
Sonar 7 HS
Music Creator 7

I was told 64 bit started with Sonar 7 and even that is not verified as stable. So I've never even heard of a 64 bit version of Sonar 6?
I would think the version of session drummer would have been 32 bit that came with 6. 
You can install the 32 bit version of 6 for better stability etc.  
If you want stable 64 bit you should be using 8.5 or X1.