Hello Dave!
All the Sibelius trumpet ensemble instruments that you have tried are working fine with the Synchron Brass trumpet ensembles here.
It can have different reasons why articulation changes don't work as expected or instruments play on the wrong channel. Did you go through the Troubleshooting section of "Sibelius Integration" tutorial yet? All possible reasons that come to my mind are listed there.
https://www.vsl.info/tutorials/guides/sibelius-integration/troubleshooting
If you can't find a solution there, please send the following screenshots and a reference to this forum thread to support@vsl.co.at.
- Sibelius "Add or Remove Instruments" menu
- Sibelius mixer
- Sibelius Playback Devices menu
- Sibelius Manual Sound Sets page of all loaded devices
- Vienna Ensemble showing one of the instruments that doesn't work correctly
Best regards,
Andi
Vienna Symphonic Library