Fixed failure to load when typing URL into address bar or clicking link.

Originally found a description of the problem on the forum post:
http://forums.informaction.com/viewtopic.php?f=25&t=16649

Took change for Load.jsm from development branch of
Peter Wu <lekensteyn@gmail.com>
commit 42d243f8052e612549548eb6385fa2c3a91a4ce7