looking at the code for the login page, dreamweaver is set to use site relative links.
this causes DW to use the virtual() function for attaching helper file:
<?php virtual('/Connections/Bombase.php'); ?>
the virtual function is supported on only a small number of PHP servers, and will cause other issues even when it is supported.
in your site definition, there is an option to "Create Links Relative To:"
change this from Site to Document, this will cause DW to use the require_once() function instead of virtual() for attaching helper files.
it is the use of the virtual function that is causing the problem.