If the Adobe After Effects 217 version appears blank after installing the Newton 3 plug-in, it may be because the Newton 3 plug-in is not compatible with this version of AE, or the plug-in is not installed correctly. Here are some possible solutions:

Uninstall Newton 3 plug-in and reinstall it, making sure that the latest version is used and it is compatible with AE version.

disable OpenGL function in AE. You can try to turn off OpenGL function in AE to solve the white screen problem. The specific method is: in AE preferences, select the "Display" tab, and then change the OpenGL renderer from "automatic" to "software renderer".

update the video card driver. In some cases, the problem of white screen may be caused by incompatible video card drivers. You can go to the official website of the graphics card manufacturer to download and install the latest graphics card driver.

update AE version. If the above methods do not solve the problem, you can consider upgrading AE to a higher version or using other similar plug-ins to replace Newton 3.

if the above methods fail to solve the problem, you can consider consulting Adobe or plug-in manufacturer for technical support.