Dilemma

My file went corrupt. What does this mean? All my work for the past lesson does not work anymore. It didn't save properly because I was forced to shut down my laptop. My solution to this problem is to borrow out a laptop on Wednesday night. I need to record the voice of BB again, and edit the soundrack. This came as a very devastating surprise, and with all the stress of other assignments being due and tests occurring, this is not the ideal situation to be in. All I can do now is remain calm, and re-record most of my sound track with my film being due in two days.