I have a .dir file with a few cast members that need to be handled.
Unfortunately, I don't have the original image files so I need to export them to .PNG and then reimport them back to director.
OS X 10.8.3
You don't need to export them.
All you need is an image editor installed on that computer.
To edit any image cast member:
- click on Edit / Preferences / Editors ...
- select the BMP, GIF, JPEG, PNG, etc image formats, click on Edit and set the path to the image editor.
After that just double click on the cast member, edit the image and save (overwrite) the result.
if your original files were png's with alphachannel inside, you should use Adobe or Macromedia Fireworks. Director hands over the alphachannel also to Fireworks.