Error: "The document could not be autosaved. The file name is invalid."
While adding to an exsiting document in TextEdit, I received the error message:
"The document could not be autosaved. The file name is invalid."
I've used this same file name on this same file for the past few weeks without any issues. Even when attempting to manually save or duplicate the document, I'd receive similar error messages:
"The document "Serial Numbers" could not be saved as "Serial Numbers". The file name is invalid."
I did finally figure this one out (or just got lucky), and I'm posting it here in case someone else has this same problem. I was using command-shft-control-4 to copy some images to paste into the file and it looks like one of the last two images I pasted into my document somehow triggered these error messages. Once those last two images were deleted, my file saved correctly and with the same file name. I have no idea why a possibly corrupted image would trigger an invalid file name error, but everything's working fine now.
Hopefully this helps someone else.
iMac, OS X Mountain Lion (10.8.5)