Works on my laptop although it's a windows machine. Am I right in assuming that the file does download but then its contents appear as gibberish? If so, what program is your machine using to try to open the file? Since the files are .pdf files, it needs to be something like Adobe Reader for Mac.
On a windows machine, at least, you are prompted to agree to the choice of program selected by the website but can change the program prior to viewing the document. Does your machine select a program? If so, which program is it?
SFS