We are not aware of any issues running the latest version of CoreMelt plugins on Final Cut Pro 11. As always make sure you update with CoreMelt Manager before updating Final Cut Pro.
We also recommend:
- Do not update in the middle of a project, wait until a break between projects.
- Backup your FCP libraries before updating
If you do find a problem with our plugins after updating please contact us. We are a small company and cannot test every hardware and software combination.