add file type
When I try to have FF open a file (nn.2905.ris) it gives me the error message "/Users/stevebrown/Desktop/nn.2905.ris could not be opened, because an unknown error occurred. Try saving to disk first and then opening the file"
Firefox will open about 5 types of .ris files for me, through Endnote. But I cannot get it to have Endnote or anything else open this because it will not go to the box that lets me select possible actions.
What do I do???