robert_e_bone
I limit the number of loaded instruments to 5-6, because Kontakt (at least at one time) used to get its list of available outputs to pick from when assigning audio track Inputs in Sonar all jazzed up, and that starts to happen after around 6 instruments in a single Kontakt instance or so.
Bob,
The fix for this is to create an output template in Kontakt (the 16 out version is the only one I ever use ... I disabled the others in plugin manager)
My template is st1 through st16
Then set it as the default output template that Kontakt always uses and all problems with Sonar and Kontakt outputs go away.
I always use the 16 out version of Kontakt, even if I'm just starting with one instrument because adding more instruments is made easy by the output template.
Do this:

And you get this:
See the larger view:
http://www.sightsea.com/r.../Kontakt_st1-st161.jpg