Several playback configuration problems can happen in Sibelius 5, mostly due to changes in the plugins folder or MIDI device list. This can cause issues such as:

• Devices or plugins do not show up.
• Playback configurations cannot be saved or loaded.
• You cannot create a new playback configuration.

To fix this, deleting the playback configuration files and forcing Sibelius to recreate them usually fixes the problem. These files are located....

* In Windows Vista: C: > Users > (your user name) > AppData > Roaming > Sibelius Software > Sibelius 5. Delete the Playback Configurations folder and the PlaybackConfig.xml file.
* In Windows XP: C: > Documents and Settings > (your user name) > Application Data > Sibelius Software > Sibelius 5. Delete the Playback Configurations folder and the PlaybackConfig.xml file.