The problem belongs to HandsOff made by Metakine
Here is the remedy
1) In handsoff click the + icon to add a new rule
2) click the cog wheel and select "Choose System Process"
3) in the dialog hit "Shift+Command+g and in the GoTo Dialog enter '/bin'
4) Choose launchctl
5) Set to allow incoming connections & mark it as a golbal rule
Now you can enable File Sharing in System Preferences