Unknown error (-50) when downloading a movie in iTunes.

Any advice is appreciated!

I redeemed a code in the iTunes store to download my digital copy of Les Mis. I paused the downloads (movie & extras) overnight and the next day the extras wouldn't download again because of the -50 error. The movie continued downloading with no problems. Last night my laptop decided to restart (something updated) and this morning when I went to my downloads it said I have 2 available - great! EXCEPT, neither one will download. It says it can't access the iTunes Store because of error -50. HELP?!