[horde] Horde 5 - accepting invitations

[Simon Brereton]

Hi

I have a problem with Horde 5 accepting a calendar invite that I don't
have with my horde 4 install.  None of the options appear to work -
i.e. accept and add, accept, add...

Something wrong with my configuration?  The error just says there was
an error contacting the server (which reminds me copying error
messages was much easier in Horde 4).

Thanks.

Simon