Download from this site

The easiest way to install the Wisext tools is through the SketchUp Extension Warehouse.

You can also install the extension with a .rbz file.

Windows or Mac
	Installation as SketchUp extension (.rbz):             newWisextRelease.rbz           (how to install a .rbz file?)

The extension has got the Extension Digital Signature to be loaded at the highest security mode in SketchUp (see: Extensions Loading Policy)

To uninstall the Wisext plugins, see: Uninstalling