I sat with my flash document open for 12 hours straight actually.. and when I closed it and opened it again I got "Flash can not parse this document".
So I googled for a solution, found that I could rename the .fla to .zip and unzip it and after 2 hours I found the XML-file that caused the problem, and I even commented out the lines in that XML-file, so I could re-zip it and rename it to .fla again and open it.
Anyway this happened again and again.. and I got frustrated.
I think I found out why this happened to me, I copied text from Photoshop into Flash CS5, and this made the document unable to open again after I closed it. It appears that the text I copied contained a "line break" or something, so I copied the text to notepad removed that character and then into flash, and this seems to have worked for.
Anyone else had this problem?
We had another user report about this issue where an ETX character in a TLF TextField was causing Flash to corrupt the FLA on save. I will contact you privately to see if I can get your FLA file to investigate if it's the same issue.
I had this happen, and have tried the .zip method to no avail. I'm very frustrated to have lost the amount of work I did. Any other suggestions for fixing this file would be very appreciated.