Using scbFramework in multiple plugins

I have built 2 plugins using the scbFramework and they both work fine individually but I can’t activate them both at the same time because I get complaints of can't redeclare scb_init() and such-like. This is fine – I’ve followed the instructions on the wiki and put the framework folder scb in the root of the plugins directory and the file scb-load.php in the plugin root as well. But now I am having trouble calling the scb-load.php file. I assume that file still needs to be required by the plugins, so instead of

require dirname( __FILE__ ) . '/scb-load.php';

I have used

require_once plugins_url( 'scb-load.php' , dirname(__FILE__) );

but then I get

Warning:  require_once() [function.require-once]: URL file-access is disabled in the server configuration in /home/gillespieza/mydomain.com/wp-content/plugins/salamander-film-festival/salamander-film-festival.php on line 37

Warning:  require_once(https://mydomain.com/wp-content/plugins/scb-load.php) [function.require-once]: failed to open stream: no suitable wrapper could be found in /home/gillespieza/mydomain.com/wp-content/plugins/salamander-film-festival/salamander-film-festival.php on line 37

Fatal error:  require_once() [function.require]: Failed opening required 'https://mydomain.com/wp-content/plugins/scb-load.php' (include_path='.:/usr/local/lib/php:/usr/local/php5/lib/pear') in /home/gillespieza/mydomain.com/wp-content/plugins/salamander-film-festival/salamander-film-festival.php on line 37

From my googling, I understand this is some sort of security issue that is present on certain hosts, and there are various solutions but they all involve contacting your host or changing your php.ini file, and none of these solutions will work for a plugin intended for general release.

What am I doing wrong, or is there a different way to require the scb-load.php file?

https://www.ads-software.com/extend/plugins/scb-framework/