Hi Michiel,

As Kim says there is no way to get back to the post-installation screen from via Umbraco itself.  All the "activator" screen did was provide a quick way to enable specific features - by adding the required config settings.  (Kim's link to the uComponents documentation provides all the details).

With that said, there is a way to get back to the "activator" screen, by using it as a dashboard control.

Add the following to your "/config/Dashboard.config" file:

<section alias="uComponentsInstaller">
    <areas>
        <area>developer</area>
    </areas>
    <tab caption="uComponents: Activator">
        <control>/umbraco/plugins/uComponents/uComponentsInstaller.ascx</control>
    </tab>
</section>

Keep in mind that this will not deactivate/uninstall anything, only activate/install.

Cheers, Lee.