Halo spots and OSA

I have a problem with halo spot lights and OSA. (This may have been asked before.)

Whenever I have a spot light that has a halo setting, and I turn on the OSA, the halo part dissappears. If OSA is off, it works fine.

ANSWER PLEASE!!

PLEASEPLEASEPLEASE!!!

umm… woops! wrong forum!

Could a moderator or someone please move this?