Let me make myself clear here!
First of all, I reckon Ernie as a nice and gentle person with intention to assist in any way possible.
My main complaint was the lack of a profound FMS manual, since the fact is, that there are exceptional procedures here which are not to be found under normal conditions.
I've just gone through some pretty frustrating months with a malfunctioning stock FMS in my favored and bellowed Wilco Feelthere B777 (bad transformation work from FS2004 to FSX) and several unlucky attempts to replace it. First I tried a FMS addon from NPSimPanels and then one from JSG's Universal FMC for FSX - both turned out to be crab. Ironically however, both had indeed very profound manuals - especially regarding to all those important exceptions which are not to be found on a real FMS. So no surprises here - Things just didn't work as it was supposed to, and in practice there was no support at all! So actually quite the opposite of my personal experience from here
All in all a lot of waisted time and money. So finally I just thrown in the towel and since there's is no serious alternative FSX 777 for the time being, I just bought myself a CS 767-300 with an integrated FMS - which as far as I have used it works fine and as expected!
So I guess this means a "Roger over and out" from me, for now.
Happy flying!