randomly totally dark renderings.

[lechiwe]

Dear all,

I experiencing, regularly, that renderings becomes totally dark : one day they are right, the day after some addendum or even slight modification, they become totally dark. usually resetting and clearing cache used to solve this issue, but now I'm stuck with pictures to deliver.

I tried that both on mac (5.8b) and PC (5.7) : exactly the same result. See the before/after below. OK I integrated characters, but inserting a simple cube could lead to the same dark render. This is why i call it "randomly" dark... all parameters are the same for the 2 renderings.

Thanks for any idea.

Philippe