Square lights

brunocesarrrr

Hi 

I'm facing a problem that is beyond my knowledge and it's driving me nuts. I have this foutaine image with four lampposts, the first image is ok.

Recently I edited the .duf file to improve the streets, but when I rendered it all the lights became square. I didn't change anything in the emissive object or the surface and already restored render settings default. 

I did a test with many variations, in the third image I:

- Removed the moon light from environment.

- Create a plane primitive above the floor. Only changed the surface base color to 153 153 153.

- Upper left: removed the lamppost and created a brand new object.

- Upper right: created a spotlight, Are rectangle 200x400, 400000 lumens, render emitter off.

- Bottom right: created a sphere primitive, applied iray emissive surface, temperature 5000, luminance 500000 cd/cm^2

- Bottom left: kept the scene object.

What can be happening?

I using UG Box Light Rim from https://www.daz3d.com/ultra-genesis-studio-vol-1-iray-box-lights, Daz Studio 4.9.4.117 and NVDIA Iray engine.