All of the Box.net download links are now back in action.
They have a monthly bandwidth limit, which they reset on the 1st of each month. It appears they ‘forgot’ to do it this month hence the issue.
For future reference, here are alternate links to the four major programs that are downloaded:
Good old faithful Dropbox goes into action!
When I get the (very long overdue) updates completed, I will be moving all links to my own host to prevent this sort of issue.