[photran] Problem installing Photran

[Arjen Markus <arjen.markus895@xxxxxxxxx>]

Hello,

I am trying to install Photran on a laptop. I have, based on the
instructions, first installed Eclipse 3.6 (Helios), with C/C++
support.
Now I try to add Photran via the Install New Software menu item. So
far, so good.

I have been able to select the proper site:
http://download.eclipse.org/toos/ptp/updates/helios, conform the
installation instructions.
However, then I get an error message:

org.eclipse.equinox.p2.core.ProvisionException
Multiple problems have occurred - Unable to read repository at
http://download.eclipse.org/toos/ptp/updates/helios/contents.xml
- host name may not be null

Any idea what is going wrong? Or better: how can I solve this?

Regards,

Arjen Markus