Project Save Error

Loaded a Project with 6 patterns. Made the 7th Pattern. turned on Input Monitor to play a keyboard. Played Keys for a while 7th pattern plays . Remembered I didn’t save pattern, so hit save. It was saving slow. Machine rebooted. Tried to load project and wouldn’t load. Error (OK) message on screen. The sounds play in the folder when pulled up on the computer. All the other beats I have load up fine.