Hope someone can help. I just pucrhased the J41 with a new install of Windows 7, running FSX with Dx10 preview switched on. J41 ran fine, but slow. then purchased Shockwave 3D lights redux and installed on default aircraft only.Have read a lot about DX10 and was getting a lot of the problems identified so switched off DX10 preview. Now cannot get any lights to come on in the J41, regardless of whether I load the tutorial to get the J41 or select it from the FSX start-up screen. When I swicth the cabin flood light on the textures just disappear. No lights come on which I switch the batteries on etc....Reinstalled J41 from scratch. Makes no difference. Am wondering if this is related to 3D lights install (but cannot see how to remove 3D lights in order to test this) or something else.Can anybody help please?Richard Cowling

Sorry Richard, can't help you.But I have another question: Can anybody tell me where I find the cabin light switch?Now searching for 15min. and still haven't found it yet...

I haven't had experience with the 3D lights, but from what I know, the lights only affect those aircraft on which they were installed. Do you have UAC on? That tends to get in the way of just about...everything. Other than that, I don't know what to tell you.Daniel,The cabin light switch is on the wall facing the captain side, behind the FO's seat.