Every time you make a change, Crescendo will automatically save your file into an auto-save folder. When you close Crescendo and if the scores have been closed normally, the files in the auto-save folder will be automatically removed.
If Crescendo crashes or the scores did not close normally, the files will remain in the auto-save folder and will be opened automatically next time Crescendo runs. Automatically opened auto-save files will be removed once they are closed. To keep the recovered file, click the File menu and select Save As to save it into another folder and file name.
The auto-save folder can be found by following the path (User Documents Folder)->"Crescendo"->"AutoSave". Auto-saved files have ".autosave" inserted after the normal file name. To recover an auto-saved file, move it out to another folder and rename it with a Crescendo extension (.cdo). Avoid opening files in the auto-save folder as they will be deleted when Crescendo shuts down normally.