Dave,
If you wish to use Kontakt 5 you will need to update to OS 10.8. Other options would be to see if you can find a version of Kontakt 4. As a registered VDL user Tapspace may be able to assist in this matter. Additionally, Finale 2014 is not supported for Mac OS 10.7. So there is that incentive to update your system. Finally, the 2014 templates are made to work with VDL 2.5.5. They should work with earlier versions of VDL 2.5 but sounds not found in earlier versions while appearing in the percussion maps and layouts of the template will not be available to use.
If you wish to use Kontakt 5 you will need to update to OS 10.8. Other options would be to see if you can find a version of Kontakt 4. As a registered VDL user Tapspace may be able to assist in this matter. Additionally, Finale 2014 is not supported for Mac OS 10.7. So there is that incentive to update your system. Finally, the 2014 templates are made to work with VDL 2.5.5. They should work with earlier versions of VDL 2.5 but sounds not found in earlier versions while appearing in the percussion maps and layouts of the template will not be available to use.