It works for me too, but i don’t know if you missed to mention (or is just my case) that this dll file is generated each time you open the WiNG Man, so you need to replace the file each time and after you run WiNG Man. That was the only way it worked...
If you have problems with end of life in WingMan you need to change pepflashplayer.dll to the older version. You need to go to C:\Users\user\AppData\Local\extreme-wing-manager\app-1.0.1\resources\app\src\flash\win32 and replace pepflashplayer.dll to ...