Hello JackJump, I will help you with pleasure but I need more informations on the scene you want to simulate. Please, can you tell me after what action the error message appears. A button, an action in the scene viewport, ... If you want, you can do a sceen capture to show the issue.

Hello StarLabz, I suppose your problem is the program sees a graphic card usable in the simulation by using OpenCL, but there is an issue in the OpenCL settings. Perhaps, your graphic card driver is not up to date. To resolve this issue, you can use the multithreading mode and use the power of your CPU to do the simulations. You can also try to update your graphic card driver. Tell me if this issue goes on after you made these tests. Could you tell me what kind of computer you currently use (laptop or desktop computer) and the graphic card you have in this computer?

For both, we are sorry for your problems.

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