Why do I get error message when I try to edit my unpublished Instructables?

Here's the message:

There's been a problem updating your Instructable
[object Object]
parsererror
SyntaxError: JSON.parse: bad escaped character


How do I fix this? I cant even delete the unpublished instructables :(

I am also seeing this on one of my Instructables

I am using Firefox 3.6.23, It showed up after I was undoing some edits to my mini lathe Instructable. The others seem fine.

There's been a problem updating your Instructable
[object Object]
parsererror
SyntaxError: JSON.parse
Also, I don't know if you did, but try to avoid copy and pasting from Microsoft Word. It has an issue with its apostrophe that could lock you out of your Instructable Editing page.
I think this error is related to Internet Explorer 9. There's a lot of weird issues with it. Would you mind trying to download Firefox and seeing if things work there?

Thank you.