Running rt windows setup fails downloaing eoin-perl

I have tried rt-3.0.6.exe from

It gets to ‘downloading oin-perl.exe’, downloads the file, but at 100%
restarts and tries again. After two tries it gives up and the
installation fails.

I have tried this on three separate machines; can anyone suggest a
reason, reproduce the problem, or else tell me where I can download
oin-perl separately?

PS. This problem also occurs with all the various other dependencies