Comment 34 for bug 599842

I have fixed the fifo file behaviour and it should now work again. Could someone please test this using the latest trunk version?
@Phan Trong Khanh: That was precisely the issue. Apparently this is an upstream bug. See this blog: http://blog.mozilla.com/addons/2010/01/22/broken-executables-in-extensions-in-firefox-3-6/