Hi Steve
1) Make sure that you have the "VDL SoundSet 6.0b" sound set applied to all instances of Kontakt Player in your Playback Configuration. Make sure you are using the instruments from the "- VDL Template 6.0b" Ensemble within Sibelius. Leave everything that's TWS template related in your score set to (Auto) in the Mixer.
Attach some screen shots showing what's going on if you still have problems.
2) I'd go with what Jesse said.
1) Make sure that you have the "VDL SoundSet 6.0b" sound set applied to all instances of Kontakt Player in your Playback Configuration. Make sure you are using the instruments from the "- VDL Template 6.0b" Ensemble within Sibelius. Leave everything that's TWS template related in your score set to (Auto) in the Mixer.
Attach some screen shots showing what's going on if you still have problems.
2) I'd go with what Jesse said.