BBC News/BBC World News Problems - 21st May

It seems BBC Four also simulcasts the 7pm bulletin

LAN network problems may be the reason why tonight is going the way it is?

Cameras derailing & LAN networks failing.... just another day in #W1A

— Chris Cook (@chrisckmedia) May 21, 2015

That's a good start, 'good evening' are they usually this ignorant to their International viewers, like CNN are?

The problems haven't prevented them from doing separate graphics on World and the domestic NC.

As I understand the problem has been caused by faulty network connections meaning programme running orders couldn't be loaded into the various galleries.

What studio did the camera derailment occur in, presumably C or E?

Studio E

Not to good then!

Why then is Studio E still online and has been all afternoon?

If you are referring to the camera being derailed then either they are working without that camera or they have been able to get it back onto the rails and are happy that all is fine with it.

I remember reading on the Ross Video website that there are buffers and sensors to stop this from happening, what happened then!

Somebody left their coat on the tracks again? A pin holding the track sections came out? A castor broke? Poultergeists?