Illustrator kept crashing so I updated. After update I openeded a file. It said it could not read all info and would do it's best. When the file opened it was a flat image. I've uninstalled the new version and reinstalled the version I created it in and opened the file but it is still flat. It was saved as a pdf file. I made a new document with vectors, saved and opened and it did not flatten. However I'm afraid to try an open anything else.