I got it to work on my second Win10 machine. I copied simconnect.dll and created simconnect.cfg as per instructions into the "C:\TA Software\Plan-G v4 64bit" folder. The only thing not working, if I make adjustments in the radio stack, i.e. correct heading, Plan-G crashes to desktop with no error message. This does not happen when I use 3.2.2.167 connected with FSX settings

That's the path on my Vista system  => C:\ProgramData\Microsoft\FSX

Plan-G:
So far the best thing ever seen for FSX Navigation!!!!
Impossible to get anything better for any money

My small contribution are the TFX destinations, publicised from a guy i could not track back, for Google Earth