Maybe check your flash settings or something? It should be fine, especially if it worked before. Try setting that storage slider to 'unlimited', that sliders controls the maximum amount of temporary files created by a certain flash application. I don;t even know if Alteil uses a function like that but you could try, it's the best I can think of.
Edit: It's doing the same for me now, I think the servers can't handle the amount of players? Even though they should because we want more than 90 people to play at the same time right?
Another edit: I got 'through', I guess I wasn't patient enough. (I did set that slider though.)