If I can quickly jump in to say something, I had a similar issue with downloading the latest version. Not sure what happened, but it was saying something along the lines of 'please install the next disk and press Continue'. No idea what it meant, but further investigation revealed that the 0.6.2 version didn't download fully, it was only at around 450 MB as opposed to 543 MB. Re-downloading it does seem to have solved the issue, as I can access it now, but I wanted to see if you had maybe been getting a similar error?