The SenseTalkEngine is a framework that is included within Eggplant. Unfortunately, the instructions for locating it weren’t included in the SDK documentation you received. We’ve updated the documentation and it will be available soon, but here’s the information you need:
The SenseTalk Engine is present on your computer as a framework within the Eggplant application. To develop XModules, you’ll need to make the SenseTalkEngine.framework accessible during the build process. This can be done by copying or linking the framework from the Eggplant application to the /Library/Frameworks directory.
To locate the framework, select Eggplant in the Finder and either Right-click or Control-click it to bring up a context menu, then choose Show Package Contents from the context menu. Drill down to Contents/Frameworks to find the SenseTalkEngine.framework. To copy the framework, hold down the Option key while dragging it to your /Library/Frameworks folder. Be sure to hold down the Option key while dragging to make a copy of the framework rather than moving it so the SenseTalkEngine will still be present in Eggplant, too!