MixScenes Folder
It's not a big thing, but Sonar always creates a folder named "MixScenes" when I open a project or midi file. This folder is deleted again if I don't use the Mix Recall feature. I think it would be better to create the folder only when it is really needed, i.e. when a mix scene is actually saved. Also, a central place for mix scenes (like the Audio Data and Picture Cache folders) might be a better solution to keep project folders clean. At best, Sonar would use the project folder when the project has its own folder, or a central folder otherwise, like it is doing for audio files.
Finally, when I open a project and save it in a different folder, the MixScenes folder in the original folder is not deleted, even if it is empty.