Warning in Building Materials Dialogue

[luciant]

Does anyone know what this warning means?

Thanks!

[James B]

When you hover on the icon it indicates that legacy mode is on. You will see this icon when you migrate a previous version into AC17.

To turn off Legacy intersection methods, go to Project Preferences > Construction Elements. Then you'll get most out of Building Materials and Priority Based Connections.

[Barry Kelly]

You still have "Legacy" mode on so in fact you are using surfaces and not seeing the building materials.
You can turn it off in Options menus > Project Preferences > Construction Elements...

It will be on by default for any file created in version 16 or before.

Barry.

I need to type faster.

[luciant]

Thanks much guys!