This error is returned when activating the product on different computers:

Activation 2009 products on different computers
To prevent this error in activations after the initial activation, follow the instructions below:
- Enter the activation code and email address in the activation Wizard. Push Try again.
- In the next screen, when asked if they are a Panda Security client, they should reply “Yes”, as indicated below.
- Enter a customer numbrer indicate in Welcome email.
- This will ensure the product is correctly activated in the second computer.