What happens to my license if I upgrade After Effects to a newer version?

If you installed the product by file copy (versions 1.0 to 1.0.2[file version]).
Delete manually the previously installed plug-in, then, after installing the new version of After Effects, re-install the plug-in using the latest version of the installer.

*Plug-ins installed by file copy cannot be uninstalled by using the uninstaller.
*If you re-install the plug-in without first uninstalling it, it is possible that After Effects will report an error when starting up because it finds 2 copies of the plug-in.

If you installed the product using the installer (Version 1.0.2[installer version] and up).
Uninstall the previously installed plug-in, then re-install it after installing the new version of After Effects.

In both cases, it is necessary to input the license key once more after re-installing the plug-in.
At that time, if the machine code is different from what it was when you last installed the product, you will need to re-authorize it.
You can download the latest version of the installer from the user page.