Hi Kerryn,
Sorry for the absence (again!!!)
I'll be in Swaziland between 10 and 28 Oct, working weeks and weekends, so I'm going to be a bit scarce.
I can access the presentations - you click on the link to the presentation (the first column: "file") and then you get to the file page. Then you click on "full resolution" (under the preview image).
Cheers,
David