Hi again
Yep, I too saw you on MP but I only received the second part of the message. Also, just so you know FG by default automatically sends a "Hello" message when entering the MP environment.
Signs are not converted by D-Laser's scripts but rather by terragear itself, so they should already be in (they are placed in the terrain folder, as well as windsocks)
If you want to add more signs, you can do that with the X-Plane world editor (WED, https://developer.x-plane.com/tools/worldeditor/ ), it edits the apt.dat file, so that terragear can generate the signs