Hi,
A little while ago I did have the same problems with the chamber strings.
Sam, from Sibelius, came up with the following solution.
I quote:
...
"If you use the built in Vienna Ensemble sound set in Sibelius 5.2.5 then you
won’t have use the .n players extra sound IDs in the score. This is what I had
to do to get the score playing correctly:
Go to Play, Playback
Devices and click the Manual Sound Set tab
Choose the Vienna
Ensemble device and change the sound set to ‘VSL Ensemble Special
Edition’
Go through the Sound
Settings for each of the string sounds i.e.
--
Channel:
1
Change Violin chamber
ensemble to Violin ensemble
Click
Apply
--
Repeat this for each of
the strings and you’ll find the sound IDs they are using don’t have a number of
players on the end.
I don’t think you need
to change anything for the other Vienna Ensemble devices as you say everything
is OK with them.
Save the Playback
Configuration and click Close.
Once in the score open
the mixer
Ctrl+Click on the on of
the Devices and choose Auto.
Ctrl+Click on the sound
and also choose Auto.
This will mean Sibelius
resets the sounds used for each of the staves."
Yesterday I had the same problem with an old score.
Applying the above did do the trick again.
I'm sure this will help.
Michel