Found the problem with FSBuild (and Orbx [FTX Central updates/downloads/install] later).
The problem was not FSBuld.
As DJ mentioned ..."Have you made any other system changes before this problem arose?
A few days ago I downloaded a temperature checking program (Piriform Speccy) to verify another P3Dv4 forum user's OverTemp problems.
I wanted to check my CPU and Graphics card temps using the same program he was using which showed OverTemps on his system.
Ref:
http://www.prepar3d.com/forum/viewtopic ... 2&t=125578The program was Piriform Speccy (free download) installed several Unwanted programs on my PC (Google Chromium e.g.).
I uninstalled it after checking temperatures .. and uninstalled the other unwanted programs that Piriform Speccy had installed.
But I missed one .....
Today I started checking my Win7 Control panel (programs) for recently installed programs.
I found ByteFence Antimalware ..... which I never personally downloaded or installed.
I un-installed it .. rebooted the PC and all Orbx product updates downloaded (quickly) and installed without "Interruption" (into FSX/P3Dv3 and P3Dv4).
FSBuild was also creating routes but I still see bad data calculations etc.
So, I will Uninstall / reinstall FSbuild and report back.