Install de.renew.fa-2.2.0
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Copy de.renew.fa-2.2.0.jar from the plugins directory into the plugins directory of your Renew installation.
Copy de.renew.fa-2.2.0 (whole directory) from the libs directory to the libs directory of your Renew installation.

This plugin depends on the following plugins: de.renew.faformalism, de.renew.gui.
Make sure you have these installed as well.