I drawn beyond the stage in Illustrator CS6 and i saved the file in .pdf with the possibility to change it again in Illustrator. Now i can't open it in Illustrator CS6 (two different files same error). I can open the files only in Illustrator CS5 but i can see only the stage. I'd like some suggestion, Thanks.
So you saved with the option "Preserve Illustrator Editing Capabilities" turned on?
Did you edit the resulting PDF file in another application afterwards?
Yes "Preserve Illustrator Editing Capabilities" turned on.
I don't edit pdf with other applications
Hide site suggestion, always, always save an ai file before saving the pdf and use only the ai file for editing. You will heave less headaches. Won't get rid of all the headaches, but most of them.