cant logout

Alon,
Can you let me know the URL of the page that's giving the 404 error? That may help diagnose things.

As for working with 3rd party SEF tools, it's best if you can have them 'skip' JFBConnect. I don't know AceSEF light, but most 3rd party extensions have a way to do this, and JFBConnect doesn't have any URLs that need to be SEF, so it won't cause any other bad problems.

Hope that helps, but if not, just let us know,
Alex

Alon,
Glad to hear you fixed the issue. It shouldn't be necessary to disable your SEF extension to get it to work, so if you want us to look into it further, just let us know.

Good luck,
Alex