Hello Arne,
Thank you very much for the fast reaction and fix! 
I can confirm that the Tubular Bells now play the correct pitch.
About the stopped (text) technique I would rather recommend the usage of “mute” as it has a Direction playback:
Probably this should be changed in the upcoming NP+NPPE update in the NP Playback Template.
By the way, have you touched the grace note performance?
Thank you once again for your fast response and effort!
Best wishes,
Thurisaz