Light Effects Not Working

Some reason two the light effects aren't working when I try to enable them in a sector. If I try to use Lights Blink Randomly or Light Glows (1+ sec) neither of them even work. All the other light effects work fine except those two, any ideas?

The sectors around them have to be significantly darker. The effect blinks/glows between it's own sector brightness and the brightness of the surrounding sectors. Also, im moving this to the Editing forum as it is a general map editing question.

Thanks CodeImp =)