How do I get rid of this error? BCE0005: Unknown identifier: 'supportDX11'

The full error: Assets/Standard Assets/Image Effects (Pro Only)/CameraMotionBlur.js(102,20): BCE0005: Unknown identifier: ‘supportDX11’.

This error only occurs after I install the Tropical Nature Pack and it’s update which apparently is supposed to make it compatible with the latest Unity, but it doesn’t. I installed the pack once and it worked fine, after a while the error started to appear, i’d restart Unity and it would go away, but the more I did that the faster it appeared, so now it just appears instantly when I open Unity.
I’ve tried a clean install too, which removes the error but I NEED the Tropical Nature Pack for the game I’m making (not to mention it was expensive).

Try deleting the whole package and run your project(you must see no errors about it), then reinstall.Check for Edit>Project settings>Player>scroll for Dx11 support checkbox:face_with_spiral_eyes:

Thanks, this works.

Glad it works. Great bit of kit that nature pack is!