This message box appears if StudioLine was not able to properly save the document the last time it had been edited. May be the computer had locked up or there was a sudden power failure.
Click OK to use the most recent snapshot copy which StudioLine automatically creates from time to time while you are working.
Click No, to revert back to the previously saved version of the document.
Click Preview to view the most recent snapshot copy. Use this function to decide if the snapshot copy is more suitable than the previously saved version.