Sorry, my bad, I started FGFS.exe in depend.exe on that last report. I have re-installed 3.6rc and have payed slightly better attention to what you asked me and indeed when running FGrun.exe in depend.exe there is an entry for intl.dll with a ? and the warning:
"Error opening file. The system can not find the file specified."
The FGsetup.log is here in my dropbox because it's 70thousand lines:
https://www.dropbox.com/s/onlj3xpnudxxfyq/FGSetup.log?dl=0
Is the system looking for a file called 'intl.dll' but is actually called libintl-8.dll?
Glad to be of assistance. You keep steering and I'll try to keep pushing.
Ray