I don't know what the issue was but I have had major problems with links to the download to percy.

This has not been just restricted to this site but from emails and PMs.

I tried the obvious of turning off my popup blocker to no avail.

In the end I went directly to percys site this took me to exactly the same page but "hey presto" it downloaded.

Now being a dumb Idiot and having used versions with lanchers before once I got the program running I was a little phased by the opening screen so for any who are like me Percys blog contains a tutorial Its a little in need of an update to the current version but on the whole its still relevent.

http://percival18.blogspot.co.uk/p/ygopro-tutorials.html

Perhaps this tutorial can be stickied for others.