I am currently running 1.7.4 on my main pc. Before updating the main pc, I always update my backup pc first, to make sure that I don't experience any difficulties. I updated the backup pc sequentially from 1.7.4 to to 1.7.6 to 1.7.7 to 1.7.8, and finally to 1.7.9. Everything seems to be working okay, except my events are not loading. Any idea as to what I may have done incorrectly along the way?