L'annee philologique/Macs/exporting records

I’m trying to export records from L’Annee Philologique, on a Mac with Safari, using EndNote X4.

I have no difficulties doing the export on a pc, as it prompts me to save the records with four choices: plain text, .pdf file, ris, refworks. The ris choise prompts the correct reader, and this opens up EndNote and the records file in.

When we try to do the same thing – I’m working with a student-- on the Mac, it only gives me two choices: plain text or .pdf file. Could anyone advise me?