System Information
OSX Catalina
Graphics card: Radeon Pro Vega 56 8GB

Blender Version
2.90, 2.90.1

The scatter objects add-on works fine with 2.83, but not with 2.90 en later. Installing the add-on works OK, but after selecting the surface and object to be scattered, pressing F3 and entering "scatter" I get the message error: "scatter not found" and drawing the line on which to scatter doesn't work.

Thanks for your help, Kees Roobol

Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).