I just checked all the links and they all seem to be working.
On the point Dirk made, if you go into Windows Explorer, do
you see the folder with the images. If you do, then look in RH
Project Manager and I suspect, as Dirk does, that you will not see
that folder. If you then right click on the appropriate folder and
create a folder with the name that already exists, RH will suddenly
see all those images and show them in that folder.
So if the folder with the images is off the root of your
project with a name of XXX, right click the Images folder in RH and
create a folder called XXX. It is in reality there in Windows but
RH is not picking it up.
I've seen this myself so I know that can work if the problem
is what we think it is.
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