If you are using a tremolo between two notes, your best option is to create a new (v27) file using one of the legacy styles in the Setup Wizard. That will use the traditional Finale fonts and allow you to create tremolo notation with the Easy Tremolo plug-in which will play back and appear correctly. I just tried setting up a tremolo with piano notes in a legacy style, and it appeared and played back correctly.

It is also possible that your bongos are running afoul of the newly organized percussion structure, but since you say they  play back correctly except for the tremolo bits, I do not think that is your situation.

I'll need to remember this, but it doesn't seem to apply here. I'm talking about a tremolo on a single not, i.e., a drum roll. It worked beautifully in v.26, but yields nothing here.

Add a new bongo player via the Score Manager and see if rolls work there.

Tried it. Still no-go on the roll.

The roll is on a dotted half note, beats 2-3-4 in 4/4 time. If I split it into 2 dotted quarter notes and use the Easy Tremolo plug-in, it plays back perfectly, though it looks weird. And seems like an awful lot of extra work that Finale used to do much more simply.

Con Violin Solo KS2, sí funcionan los trémolos en Garritan for Finale.

Percussion rolls not playing back are a known issue in Finale 27, according to a tech support rep from Wallander Instruments (NotePerformer):

"With Finale, tremolo was always only generated when using the original
'Maestro' font. When upgrading to SMuFL, they changed the font, so the
problem is also with default documents. Unfortunately I don't know of
a workaround, but it needs to be fixed at the end of Finale."

I just completed a rather large score for band in which there are various timpani, snare drum, and suspended cymbal rolls. None played back in a Finale 27 file with the SMuFL fonts (which is the default when setting up a new document).

My workaround, though tedious, was to set up a new score with the same instrumentation and other parameters, and in the document set-up to choose "Legacy fonts" and "Engraved style" (Maestro), then copy everything from the existing score to the new one. I still had to add some dynamics and articulations in the percussion parts, including all the roll articulations, that had disappeared in the copy-over. But they do play back correctly now. I'm keeping the original document to print a score and parts from, and I'll use the new document as a playback vehicle from which to output an audio file to demo the piece.

Until Finale/MakeMusic issues a bug fix, I'll choose "Legacy fonts" during set-up of any new pieces. 

Any update on this in the last three months? I've got a triangle part where I'd really like to hear the tremolo (without creating a second document, etc.)

No idea. I went back to using Finale 26. 27 got in the way of almost everything I'm working on.

Ok. BTW I just discovered that while it won't play using the three slashes on the note stem from the articulation tool, it will work using the trill tool from the from the smart shape tool (click and drag right). Same for timpani. While that's fine for percussion parts, you can't do that with strings.

The latest news about the Finale 27.1 update "coming soon" says that work has been done to make plug-ins and articulations more compatible with SMuFL, so perhaps this will help meet your needs.

https://www.finalemusic.com/blog/the-leadership-series-the-future-of-finale-v27-part-2/ 

If this has been a known problem for over a year now....

Beyond frustrating. I see the note reacting to the notation, but it is greyed out as soon as I select rolls rather than single strikes. What am I missing?

Simon, have you upgraded to 27.2? Finale says they fixed a number of problems. If you're on 27.2, please send this in to tech support, with the Submit a Request tab.

It works (with version 27.2)! Thanks, Mike, for the update. I tried both strings (violins) and percussion (triangle).

I have Finale 27.3. When I put a three-beamed tremolo on a string section, using the Articulation Tool, the tremolo doesn't play. I just hear a short attack (like a staccato). The two-beamed tremolo works as expected, though (yet sounds too slow for me). I tried to see if choosing the Legacy Defaults > Engraved Style would be any different but it does the same thing.  The three-beamed tremolo works on a piano note, though.

Hi, Amir, Since this works for most users, we need a bit more information;

https://makemusic.zendesk.com/hc/en-us/community/posts/215729367-General-Discussion-House-Rules

My environment information: 

OS - Windows 11 Home

Processor - Intel Core i7-1065G7 CPU @ 1.30GHz  1.50 GHz

RAM - 16.0 GB (15.8 GB usable)

System type - 64-bit operating system, x64-based processor

Finale 27.3.0.137

GPO 5

Steps to replicate the issue:

1 - Run Finale (using the "Run as administrator" command).

2 - Click on "Setup Wizard".

3 - From "Select a Document Style", select "Orchestral" > "Orchestra (Finale Maestro)", click "Next".

4 - From the left column click on "Strings", from the middle column click on "Violin section", click "Add", click "Next" two times, and click "Finish".

5 - In the first measure, put C5 whole note.

6 - Click on the "Articulation Tool", move and position the curser over the note, and click.

7 - From the "Articulation Selection" window, select the 3-beam tremolo (item #35).

8 - Click on the "Play" command.

9 - You hear a pizzicato.

Observation:

When I go to the "ScoreManager", the "Device" is "Garritan Personal Orchestra 5", and "Sound" is "Violins 1 KS (GOS)", which belongs to the "GPO Orchestral Strings" category.  If, instead, I choose from "Sound", the "GPO Section Strings" category, and from that select "Violins 1 KS", and click on the "Play" button, I can hear the 3-beam tremolo.  But that is not a reasonable workaround because, first of all, "Violins 1 KS" has a different timbre than "Violins 1 KS (GOS)".  Secondly, it is not wise to add to the score a string ensemble from each category, and revert to one or the other, when needed, to make up for the shortcoming of each.

IIRC the GOS libraries were some of the oldest of the Garritan instruments which were brought back in the most recent version. I have always preferred the GPO4 strings myself and wonder why the GOS strings are the default in templates. Perhaps HP settings need to be changed to activate tremolo on these older strings.