Weird shadow? line appeared

jimmz189

I'm having a bit of trouble, for some reason starting just the other day a weird line has appeared. It goes straight through anything I place in the scene. 

It can only be seen when I switch to iray to render. It will sometimes disappear if I use harsh light in the scene  but I'm not sure why this is happening. it will also sometimes disappear if I randomly change a morph too.

I have never had a problem with the program before this week.

Richard Haseltine

Several people have reproted issues like this. What GPU(s) do you have?