Norton Antivirus: fzshellext.dll put in quarantine, false positive?

Hello, I've downloaded Filezilla 3.5.2_win32 from the Filezilla site http://filezilla-project.org/download.php.

 

Norton Antivirus puts a file, fzshellext.dll, in quarantine, which the people from Filezilla claim to be false positive. Could you please advise on this. Thank you.

If the file seems to be a false positive you will be able to click on History>quarantine and click on the entry for that file.  Click more details and a screen should open up allowing the option to restore the file and add it to scan and auto-protect exclusions.  You will also be able to submit the file to Symantec from quarantine.