If 3DPrint has not been installed, you will first need to install it. http://infocenter.3dsystems.com/projetcjpx60/software-downloads. Installation instructions are available in the 3DPrint User Manual. Be sure to install the software on the same computer that is connected to your 3D Printer. Also be sure you use the version of 3DPrint that came with your ProJet x60 system.
If you encounter any problems during installation, please contact your local Service Provider or Reseller, or visit the Support section of our Web site at https://support.3dsystems.com