Hi everyone !
i have been working on a render for a couple of days now and today i opened the file and start IR(interactive rendering). To my surprise i saw some of the lights messed up. i checked in the model , the rectangular lights i had created were all rotated except one. Moreover i saw in the model that solid black material was turned into a transparent black material. When i opened the material editor and choose pick material to see material properties, it was a solid brown(though the original material was solid black).The material i used was corona legacy material, after reopening the file it was a physical material. Can anyone tell me what's going on?