Hello Walid! What GPU are you using? How many GPUs are installed in your computer and which? Can you pleáse show the screenshot of detected GPUs in the dropdown list in the Hardware Settings rollout of CentiLeo renderer settings?

Is it happening on every scene?

Hi Walid,

We are currently working to solve this bug. You are not the first one to report about it.
I think it is reproduced for evey scene small or big. In short, it is related to CUDA memory fragmentation which doesn't give developers as big memory blocks as they want. So we need to get memory from CUDA in many smaller blocks.

If our fix to it works out there should be solution with other fixes in 0.42 version tomorrow. Please, check this forum tomorrow. We need your further assist solving this issue completely.

Right now you can set GPU geometry cache = 1024 Mb and click "Apply HW settings" and then click "Open CentiLeo FrameBuffer". In this case it should work.
Then for interest you may test it with larger caches and then probably find the cache size when it fails. Potentially it is at 4096Mb.