Cannot write to actions file

The actions file you are trying to edit (@f@.action) could not be written to.

You many not have permission to write to the file - check the file permissions. On Windows, right-click the file, choose Properties, and make sure it is not read-only.

Another reason you may see this message is if you have run out of disk space. If that is the case, then the actions file has been truncated - if you get further errors, you may need to fix it using a text editor.