I would encourage you to upgrade your Trill.test references to Trill.ms. I "upgraded" the object to Trill.ms a long time ago, and there has been at least one bug fix that you won't have in Trill.test. I don't have a copy of that file anymore, so I had to rename the object in your clip so it would display, so I could see what was incorrect (I also had to add the Ottavamatic.ms to the start of the clip, since it looks like you missed that in your copy/paste.)
In any event, I think I have a solution to your problem:
- Go to the properties for the Ottavamatic.ms object, and check the box that is labeled "Include Rests".
- Insert an invisible grace rest after the final note in your trill, and increase the trill's span count by 1.
I've pasted those changes here:
!NoteWorthyComposerClip(2.75,Single)
|User|Ottavamatic.ms|Pos:-4|Class:StaffSig|IncludeRests:Y
|Instrument|Name:"8va"|Trans:12|DynVel:10,30,45,60,75,92,108,127|Pos:14|Wide:Y
|Note|Dur:8th,Slur|Pos:#-3|Opts:Stem=Down,Beam=First
|Note|Dur:8th,Slur|Pos:0|Opts:Stem=Down,Beam=End
|Note|Dur:8th,Slur|Pos:2|Opts:Stem=Down,Beam=First
|Note|Dur:8th,Slur|Pos:3|Opts:Stem=Down,Beam=End
|Note|Dur:8th,Slur|Pos:#4|Opts:Stem=Down,Beam=First
|Note|Dur:8th|Pos:7|Opts:Stem=Down,Beam=End
|Bar
|User|Trill.ms|Pos:12|WhichFirst:Auxiliary|StartOffset:1.3|AuxNoteInt:2|LineType:Jagged|Span:2
|Note|Dur:8th,Grace,Slur|Pos:7|Opts:Muted
|Note|Dur:Half,Dotted|Pos:6|Opts:Muted
|Rest|Dur:8th,Grace|Visibility:Never
!NoteWorthyComposerClip-End
Let me know if that's the effect you were after.