It is really curious situation... Even the Group: Moderator, with advanced Web Development skills is unable to resolve the "attachment problem" on this forum.On The W3 schools forum, by the way... You'll Believe It When You See It
As I said before, I get an error message: But, I am logged in. It is a typical permissions problem, I suppose.p.s. firewall deactivated, tried with Firefox and IE - same result.