Your license works with Final Cut Express, Final Cut Pro, Motion, After Effects and Premiere Pro.  (Click here for a list of compatible host product versions.)

• If you want to run Final Cut Express, Final Cut Pro or Motion, you need to download the software for "Final Cut Pro and compatible"
• If you want to run After Effects and Premiere, you will need to download the software for "After Effects and compatible products"

If you install a new host application on your machine, you will probably need to re-install your plug-ins afterwards, so the new application can locate them.