Hello, im a new player.

When i first downloaded the game it ran fine, and i played it until my mist ran out.
then when i tryed to get it the next time it opened a black window that stayed on the screen for ~5seconds and then disppeared.
when i tryed to reinstal java it said i didnt have it, even though i could play the game the first time.
It took me a while to figure out how to install java, but i finally did, and it recongnizes it.
I also tryed to reiinstall the download of SK, but when i do it gives me a box saying it is already installed, even though there isnt a trace i can find on the computer of the game.
After all that i tryed to play it again (through the internet) but it did the same, a black window for 5 seconds then it disappears.
sometimes 2 windows open.

I really enjoyed this game, and i want to play it more, but i can't.

Help?