I am trying to create my first hybrid iPad application using force.com ...

The installation appears to be successful, and I was able to create a new project in XCode using the force.com template (the icon showed up). I then compiled the empty application which failed to link because of the JSON library (libsbjson-ios.a). When I searched in FINDER, It is a zero-length file.

Is there a way to rebuild this library without uninstall/install?

Any tips to troubleshoot and fix?