I don't think anyone (including me) have this kind of problem.
I'm rendering my new scene at 800x450 as a test render at 0.92 details, 2 AA GI Relative & sample quality at 2, I've only cropped the left side of the render and as soon I've hit render, the warning windows says "An unknown error has occurred in a render".
So I've canceled my render, look for anything suspicious until I've found out that the Crop Region has caused the issue.
So I want to know is there's anyway to fix it?
Thanks.