Can you copy and paste the WCP entry from one of the aircraft you have added weapon to?

Give me a list, like the following, from the panel.cfg in the panel.csweapon folder

[Window Titles]
Window00=Main Panel
Window01=Weapon Control Panel
Window02=HUD
Window03=HUD Glass
Window04=Landing View
Window05=Mini Panel
Window10=CS Weather Radar
Window11=Radio Stack
Window12=GPS
Window13=IFR Panel

[Window01]
Background_color=0,0,0
no_luminous=1
size_mm=1024, 170
position=7
visible=0
window_size=1.000, 0.170
ident=10901
zorder=2
gauge00=CSWeapon_panel!CSWeapon_panel, 0, 0, 1024, 170

I'm using the default C172 as an example.

You do have FSX SP2 or FSX Acceleration installed?

Mark