by Alant » Thu Jan 28, 2016 10:09 pm
If the dll´s are not found it is because they are neither in the windows path or the directory from which you have installed Flightgear.
Open a Cmd window and run the command "set". Check that the directories where you have these dlls installed is listed under the"Path=" line. Double check that the dlls exist in these directories also.
Do you have multiple versions of Flightgear and the 3rd party libraries installed? If so check that you are using the one(s) that you want.