Hi,
that's weird... the filename seems to be "kind of" OK (the "\ /" backslash+slash could maybe confuse the browser) but i have no idea where the "()" at the end comes from.
Since the error message seems to be output by your browser:
In Firefox or Chrome hit F12 to open the Developer Tools, reload the page and check for any messages esp. in the Console output, that could give you a hint as to what's going wrong.
cheers, Frank