Final Poster Digital Print

The digital print of my final poster messed up. I bought a memory stick from the library to put the file on to give to digital print and when I went to collect it the next day it turned out they hadn't been able to print it because the memory stick was 'kaput'. I took it back to library who suggested taking it to the IT guys to see if they could figure out what the problem was and it turned out that it wasn't formatted for Macs. Luckily (I thought) this was two days before the hand in so they re formatted the memory stick so that it would work with Macs and then I put the file on the memory stick again and returned to digital print. It seemed to work, we were able to actually get it off the memory stick onto the computer in digital print and it loaded so it would print. However, when i went to collect it today, it had printed, but there's a big pink line across the top which should not be there, it turns out it was like that on the file and the memory stick still wasn't really working. I obviously didn't have time to do another print though because i wouldn't be able to collect it until half past three tomorrow. I'm not really that bothered because it wasn't a mistake I made and you can still tell what the poster would have looked like. The colours did also print a lot better on that version than on the test versions as well, so if it wasn't for the big line it would be fine. The only other problem maybe is that because I printed the poster in digital print, but the postcards and stamps in the studio, the colours don't match.