Warning...
Please, do not update Firefox 57.0 with XN 3.5.23 (or Reloaded). It will NOT work at all.
Unless you use Firefox's ESR, it will give you another year before "kiss and goodbye" to 3.5.23 or Reloaded!
Not Tobwithu's fault but Firefox's fault to remove API.
Again thank you all for the loyal user for many years including me.
CFBancroft