I get this warning a lot while in the Editor. I'm using Unity 4.x Pro. The warning comes up every time I run the game in the Editor. Not sure if it does it in a build, but I'll look at output logs if needed. Anyway, it says to please contact support, so here I am.
Thank you for getting in touch, we really appreciate it. It would be great to get some additional data in order to debug possible problems.
-Unity version used.
-Is the issue specific to a character model?
-Do you use the “Optimize Game Objects” option available in the RIG tab of your character model?
-Any visible issues with the blur effect?
Looking forward to any additional info you might be able to provide, thanks!