Lights don't work

[Kookas]

For some reason, after creating my Volvo XC70 prototype, if I add a light, it's gone (although still listed in the Lights editor) when I next spawn it :| I've tried restarting, different names, lots of things, nothing works. It's not like this for other things.

[Guest Francis]

On the prototype, there are different checkboxes on the bottom, you've made a wrong choice. Please take a picture of your prototype window, not the light editor.

[Kookas]

Well, the settings were the same as my fire engine that worked. Meh, copying a working prototype and then editing its settings works.