There is an option to turn off the p2p part and just have the direct http.
I found that to be faster for me as there is no way of limiting your upload bandwidth. That would choke my connection, trying to upload faster than was good for it.
Anyhow.. have you gotten any of the downloads?... I have noticed that they will release the download info well before any actual download is offered.
The latest patch is offered, yet nothing is ready to download..
So my guess is your trying to download .... well... nothing.. So it gives up and closes...
Or is it downloading then crashes?