The GearBox Plug-In may or may not work properly on your system (you should definitely try it out, since your device is equipped to authorize it. It's just that if there are any incompatibilities with the newest OS environment or newer host DAW, we really won't be able to help resolve any of those potential scenarios). The Plug-In itself has not been supported by us for three years now: http://line6.com/support/docs/DOC-1972

The POD Farm 2.5 discount offer was only for the first 30 days after the initial release of the software back in May/June. At this point, it's up to regular pricing ($99.00): http://line6.com/store/podfarm/toneportdig