Corona doesn't render anymore - how to reset?

[BenZ]

Hello,
after some trouble with a file and a crash of 3dsMax, Corona isn't rendering anything at all and needs several minutes to stop
I opened also another file from yesterday to check...

I guess something in the preferences has been destroyed.
What is recommended to solve this?
Install again over it? or deinstall first? Or are there preferences to delete?

Thanks again

[romullus]

Might be a stupid question, but is there some lights in your scene? Can you show VFB's stats tab while rendering?

[BenZ]

Yes, both scenes rendered before properly as they are.
The scene from yesterday was already a double-check.

[PROH]

Hi. First thing to do, is to switch over to "Beaty" (you're in Lightmix). If this is black too, then check your lights and maybe exposure.

Hope it helps

[BenZ]

Hi,
I found the reason - you wouldn't get on that idea :)
In the background was Maya still silently running with Vray-IPR on.
As soon as I switched it off, Corona worked again.

Cheers
(& thanks for your replies..)