all of the include files are using the virtual function, for example:
<?php virtual('/~gyske/HavasoSculpture-Server/Connections/connBlueSkyMusic.php'); ?>
The Virtual function is not supported by most PHP servers.
DW Uses the virtual function for include files if you you set the Site to create links relative to the server.
In the site definition, you should set the option for creating the links to use the document instead of the server, this will cause DW to use the require_once function for the include files.
it is the use of the virtual function for the includes that is causing the error.