Hi Houston
I've not seen that message before. The first thing that comes to mind is to trash the old/current dll files and copy fresh ones over. The other thing you might need to do is trash your Playback Configurations - these are known to become corrupted on occasion. The configs are in the Sibelius User's folder (Windows): C:\Users\your username\AppData\Roaming\Avid\Sibelius 7, then just delete the entire "Playback Configurations" folder. Sibelius will re-create the folder again upon restart. You'll have to then create whatever configs you want again.
Let me know how you get on.
Hugh
I've not seen that message before. The first thing that comes to mind is to trash the old/current dll files and copy fresh ones over. The other thing you might need to do is trash your Playback Configurations - these are known to become corrupted on occasion. The configs are in the Sibelius User's folder (Windows): C:\Users\your username\AppData\Roaming\Avid\Sibelius 7, then just delete the entire "Playback Configurations" folder. Sibelius will re-create the folder again upon restart. You'll have to then create whatever configs you want again.
Let me know how you get on.
Hugh