I'm not so familiar with squawkbox because I'm used with FSInn but have installed SB4, and edit the DLL.xml file so it is in the taskbar in P3D but hitting the SB4 startup button, nothing appears.I can manually start SB4 and it's working ok BUT in my VC there is no overlay with a SB4 bar. I have to go to P3D windowed mode and have to put SB4 above it with the problem that I have to switch between P3D and SB4 that puts P3D in pause mode... Not so fine when flying...Who can tell me how to handle....Thx.

Use SB4 in external app mode (where it's running outside P3D as in-process causes some issues due to the interface being old-school) and make sure in the settings that PAUSE ON TASK SWITCH is disabled (so it won't pause just for switching to the SB4 interface...Haven't tried it but I've read that as the fix elsewhere...