Due to a hard drive crash, I had to reinstall Sonar Platinum.  Now, I can't get any sound from Studio Instruments Drums and Studio Instruments Bass.  The piano and the strings work just fine
 
I load an instrument, but it will not sound, either from a midi track assigned to it, from my keyboard, or by plucking the strings with my mouse cursor (or hit the drums)  This is not exactly a major problem, but I find these instruments to be very handy and I actually use them quite a bit when beginning projects.
 
Yes, I have checked midi routing, I have checked mutes and solos, I have loaded an instrument.  As I said the piano and the strings work fine.
 
Any ideas?