Final Cut Pro: "AE Effects Error: Unable to find plug-in" warning when opening some projects

Resolution

This may happen if the project contains clips that use Boris Calligraphy 2.0 plug-ins as installed with Final Cut Pro 5.1 or later. Take these steps to resolve the issue:

1. Open the project in Final Cut Pro.
2. A dialog will appear, asking to update the project. Click Yes.
3. A warning dialog will appear, asking to to search for another plug-in. Click No.
4. The Reconnect Media dialog will appear. Click Continue.
5. After the project opens, Choose File > Export > XML.
6. Use the default settings in the Export XML dialog window.
7. Import the XML into Final Cut Pro. Select all the project options in the Import dialog.

Now you should be able to edit the original text in the affected clips with the Boris Calligraphy 2.1 plug-ins.