Filmerit manages the DirectShow filters on your system. You may take a "snapshot" of all your filters, compare it to another snapshot, change the merits, fix all errors with one single click. Filmerit is secure and easy to use.
To install automatically Filmerit on your LiberKey, make sure you previously activated files associations from the "LiberKey Tools" menu.
You can then open the file directly to start the installation.