I'm trying to install the presets, but I don't have the option in the presets manager to load brushes, only contours and tools:
These are the instructions...
To install the brushes and patterns, go to Edit > Presets > Presets Manager. In the Presets Manager panel, select Brushes as the Preset Type, click Load, and select the Watercolor Artist – Brushes file from the downloaded folder.
Actions and scripting, Download and install, How to, Mac, Problem or error