I made a last test for you regarding this issue and tried the Piper Cub that comes with P3D. I hope that is ,"default" enough
Same result (I'm using P3D V3.0). I send you the Panel.cfg file. I added the line to the radio stack.
Thanks Ralf,
Just had a look and i'm stuck as to why it won't load...it won't load in FSX-Steam Edition either so i'm wondering if P3D and FSX-SE are very similar in files(Gold and Accelleration) installed.
Obviously something is blocking them so only use standalone app for now until i can work something out but it's not looking promising