Same setup. Sidebar shows for me after selecting it from the View -> Sidebar menu, however it pops up with a message that says "Run --fix-permissions first." Not sure where I'm supposed to run this flag.

There is so many hoops I have to jump to make this work in OS X.

$ mv firesheep-backend firesheep-backend.binary $ cat > firesheep-backend #!/bin/sh sudo /path/to/firesheep-backend.binary $@ ^D $ sudo chmod +x firesheep-backend

Then restart Firefox and start capture. You need to run sudo once every certain period.

It worked instantly for me on OS X. I installed, restarted the browser, and it opened the side panel.

I keep getting a "Failed to fix permissions" error. Any insight into that?

FYI if you're still looking into this, this comment helped me http://codebutler.com/firesheep#comment_5843350

I have filevault turned on. Moving the binary out of my home folder (and adding a symbolic link) solved the problem.

Same error for me. No idea where to run though.

Ditto

view -> sidebar -> firesheep

Thanks!