Digipack today unable to work

Today I came back after school planning to do more of my digipack I wanted to add the logo and the smaller details needed on my digipack such as our stars signature but I was unable to do this because photo shop was not working properly it was not letting me complete the task I set out to do it wouldn't let me crop change colours or create layers I was unable to do anything with this. I plan to do this another day after school but this has put me behind my personal schedule on completing my didgipack   as I planned to finish it before Thursday this deadline is now unreachable, but form this I have learnt that you are not always able to rely on technology and you have to plan better for technology differences so I could have planned something else to complete and continue.