I'm experiencing a strange problem with Illustrator CS4. I've just completed a project in Illustrator CS4 and find that I am not able to open the file. Here's the scenario: I create an Illustrator document… let's call it Document_01. But before I close the document, I choose Save As and rename as "Document_02" and save it on an external drive. So now, Document_01 is no longer open, but Document_02 is. Then, I choose Save As again and rename as "Document_03" and save to yet another volume. Now I have three copies of the file, and only Document_03 remains open. Then I choose "Open" and direct Illustrator to Document_01 and click "Open" and I'm greeted with this lovely little error message which says "Cannot open the illustration. The illustration contains an illegal or misplaced operator." I click the OK button on the warning dialog and what appears to be a blank Illustrator document opens up. In fact, it doesn't matter which of the various duplicate documents I try to open… all of them will give me the same error and I cannot open any of them successfully.
The project is one of a series of illustrations, all of which contain essentially the same elements created from an .ait file. In the past several days I've created 3 other (different, not copies of this latest one) documents from the same template as part of the same project and I'm able to open any of those with no problem.
I have run Disk Utility on my startup volume and have trashed Illustrator's preferences but nothing has changed.
Please offer any suggestions you can and thank you very much.
The illegal operator is some part of the code that somehow got corrupted.
Some ties you can open the file by creating a New empty document and placing the od file into it.
Sometimes by distilling it or opening it in either Photoshop or Acrobat
There is also a method for recovering files from AI do a search.