Landing lights cant stay on during flight with FSPX

[Antonis SX-AKO]

For many months I have been using FSPS and Shockwave lights and Saitek panels in my fsx installation.
Lately I encouter a problem that when I press the landing light key on the saitek panel the landing lights are on for a second and then again off. I
checked and it only happens when I fly with FsPs on. when I dont use FsPs everything is ok.
Any ideas?

thanks in advance

[timtomairways]

i think shockwave light can caues this issue. something about them turning off when the gear comes up.

[Antonis SX-AKO]

The problems exists only on specific airplanes ( at least 2 of the fsx defaults) so I agree with you that the problem has to do with the Shockwave
lights and FSX, not FsPs.