To enable the Heated Build Plate setting in the MakerBot Print software.

You have to replace one file.

First make a backup of the current "replicator2.json" (just zip it).

And then replace the "replicator2.json" file.

Win: C:\Program Files\MakerBot\MakerBotPrint\resources\app.asar.unpacked\node_modules\MB-support-plugin\mb_ir\MakerWare\resources\default_machine_configs

To get the MakerBot Print software

https://www.makerbot.com/3d-printers/apps/makerbot-print/download/

Under the "LEGACY PRINTER SUPPORT" The version should be 4.3.0.X