Clone Digger Eclipse plugin not working properly again

[zpcspm]

I've just tried to install it into Eclipse 3.5.0 (Linux).
Went to "Help -> Install New Software".
Clicked "Add" button.
Added location "http://clonedigger.svn.sourceforge.net/svnroot/
clonedigger/trunk/org.clonedigger.feature/". This is the location
suggested by eclipse plugin manual (latest svn r208).
After selecting that location from the dropdown menu "Work with:",
nothing happens. The "Next >" button of the wizard just does not
become active and I can't continue.
This is not a connection issue, because if I go to "Window ->
Preferences -> Install/Update -> Available Software Sites", select the
added location for Clone Digger and hit the "Test Connection" button,
the test succeeds.

I can run Clone Digger from command line, but I'd like to have it in
Eclipse as plugin. I'd be happy to provide additional details if I'll
be hinted about places in Eclipse to look for debug/error log messages
that can help you find out the problem.