Re-installing my license on a different machine

[Adri_Noll]

Hi, I'd like your assistance with the following: My workplace has 3 licenses for Contribute 3 and one of the PC's hard dirve crashed and Contribute hasn't been re-installed as the person is not using it. I downloaded it on my machine and when I tried to type in the serial number I got an error sign (red X).

Can you help? Thank you.

[Mylenium]

It's probably an upgrade and requires the previous serial.

Mylenium