Error while updating Instructable parsererror suddenly popped up

I need help with my Inscrutable, will anyone lend me a hand? I was working on it using Firefox 12 when a 'parser error” suddenly popped up.
I couldn’t find a way around it.
There's been a problem updating your
Instruct able
parser error
Syntax Error: JSON. parse:bad
character in string literal
Does anyone have any suggestions?
Kindly help me
Thanks
Preet
