It seems that GeoIP in TBB 3.6 is mis-configured to be located in a sytem folder in windows 7, for example.
"[WARN] Failed to open GEOIP file C:\Users\USERNAME\AppData\Roaming\tor\geoip6. We've been configured to use (or avoid) nodes in certain countries, and we need GEOIP information to figure out which ones they are.
The following torrc setting is ignored:
GeoIPFile C:\Users\USERNAME\Desktop\Tor Browser\Data\Tor\geoip
"[WARN] Failed to open GEOIP file C:\Users\USERNAME\AppData\Roaming\tor\geoip6. We've been configured to use (or avoid) nodes in certain countries, and we need GEOIP information to figure out which ones they are.
The following torrc setting is ignored:
GeoIPFile C:\Users\USERNAME\Desktop\Tor Browser\Data\Tor\geoip
GeoIP works just fine for regular IP(v4) addresses. The warning refers to another missing/misplaced GeoIP6 file only for IPv6.
For now, you can just download that file directly into the appropriate folder from https://gitweb.torproject.org/tor.git/blob_plain/HEAD:/src/config/geoip6
The correct torrc directive to set the GeoIPv6 file location is GeoIPv6File, not GeoIPFile.
Appreciate and eagerly await an update of your recommended settings!