Download problems

Hi,
i'm trying s2member with a local wordpress installation. I configured all parameters, membership options and so on, but when I try to perform a download it is not working.
I noticed that the url changes from "?s2member_file_download=myfile" to "?page_id=0&s2member_file_download_req=myfile". I guess a "Save as.." window to pop up, but nothing happens.
Any advice?
Thanks in advance,
Luca
i'm trying s2member with a local wordpress installation. I configured all parameters, membership options and so on, but when I try to perform a download it is not working.
I noticed that the url changes from "?s2member_file_download=myfile" to "?page_id=0&s2member_file_download_req=myfile". I guess a "Save as.." window to pop up, but nothing happens.
Any advice?
Thanks in advance,
Luca