It looks as though HKGRO have changed the paths to their files. eg the Started 1916, pg56-76 page links to the 1916 Jurors list at http://sunzi1.lib.hku.hk/hkgro/view/G1916/48531.pdf
But that no longer works. Now the link to the 1916 list is:
http://hkgro.lib.hku.hk/archive/files/5c8ced3e378df0fef5bdb1031bc844f9.pdf
A quick search shows we've got over 250 links to HKGRO documents. They don't work any more. If you find one, and happen to track down the new link, please could you leave a quick comment with the new link? I'll go back and edit the link to update it.
Changing paths like this is frowned upon for archives. If we've got over 250 links, you can imagine that across the whole web there will be several thousand links that no longer work. It's a bit like turning up at work one morning to find that your phone number has been changed, the old phone numbers have been cancelled, and none of your customers know how to contact you.
Regards, David