Bad Link? ( WRITTEN TUTORIALS － Creating Breakable Objects in 3DS Max )

When I clicked the link "Creating Breakable Objects in 3DS Max" in the following site.

http://www.torquepowered.com/documentation/torque-3d

Quote:
WRITTEN TUTORIALS:

Creating Breakable Objects in 3DS Max
- This guide serves as a primer for the basics of PhysX, when working in Max to create real-time destructible buildings for Torque.

Then I got the following information.

Quote:
"Not Found
The requested URL /torque-3d/official/content/documentation/Artist Guide/Max Guides/MaxPhysXGuide1.html was not found on this server."

Is it bad link? Does anybody know what?

Thanks for any help in advance.