Here the same. I work on Linux OpenSuse Leap 42.3. S3D 4.0.1 used to work without any problem. After upgrading to 4.1.1 I get crashes after switching between the main screen and sliced preview a couple of times. It starts showing the sliced preview as black background and the complete interface hangs. After a few seconds I can use the interface again. If I continue to use S3D it shuts down. When I close the slice preview immediately, I can still save my work, after which I should close and restart S3D to avoid loosing any changes.
I've checked the processes and processor/memory activity, but I see no exceptional usage of resources.
It would be great if S3D could solve this problem, as I understand it's a generic issue.