So, after the new update came out, Osu has been acting strangely. It's been constantly doing this everytime I tried and seems as if it's missing a file. I managed to capture what happens everytime in a gif in the link below
http://gyazo.com/9dddc9f8a21da608f752b6bace272001
osu! version: 20150414.2
http://gyazo.com/9dddc9f8a21da608f752b6bace272001
osu! version: 20150414.2