Plug-in does not appear in FCP 5.1

Help! I upgraded to FCP 5.1 and now my Automatic Duck plug-in is missing!

Due to changes introduced in Final Cut Pro 5.1...

...Pro Export FCP plug-ins older than version 3.03 do not work in FCP 5.1 or later.
...Pro Import FCP plug-ins older than version 2.0 do not work in FCP 5.1 or later.
...the Free XML Exporter older than version 1.02 does not work in FCP 5.1 or later.
...the exporter that came with Pro Import AE 2.0 and older does not work in FCP 5.1 or later.

Pro Export FCP 3.0
If your license is for Pro Export FCP 3.0, you can update to the latest version at no charge from here.
If your license is for Pro Export FCP 2.0 or earlier, you can upgrade here.

Pro Import FCP 2.0
If your license is for Pro Import FCP 2.0, you can update to the latest version at no charge from here.
If your license is for Pro Import FCP 1.0, you can upgrade here.

Free XML Exporter
http://www.automaticduck.com/xml/

Pro Import AE 2.0 or older
If you have Pro Import AE 2.0 or older and you're using our plug-ins to translate FCP timelines to After Effects, the OMF export plug-in that came with those import plug-ins is not compatible with FCP 5.1 and later. Upgrade to Pro Import AE 3.0 here and you will be able to export XML 1.0 files from FCP 5.1.x and import into AE.