So I downloaded the World of Minecraft client and everything. I extracted the files, and I'm pretty sure the minecraft.jar thing downloaded when I clicked accept. Then the log in thingy came up, I logged in, and then eventually some message popped up that said "Server timed out while getting server list" then asked if I want to retry, which I did and either the same thing pops up or I get a message saying "Error occured while loading server list. Server returned HTTP response code: 503" then asks if I want to retry or quit. Then when I exit off it, it says "Fatal error: Error launching World of Minecraft client: java.lang.NullPointerException". That pretty much sums up my problem. What should I do to solve this here?