Line:5 Error:'JSON'is undefined in yahoo massenger?

hi i "Sign In" in yahoo messenger , after 5 min i see This Error : ------------------ A Run time Error has occurred Do you wish to Debug ? Line:5 Error:'JSON' is undefined in yahoo messenger Yes No ------------------ what should i do ? please help me !! P.S : i reinstall... show more hi
i "Sign In" in yahoo messenger , after 5 min i see This Error :

------------------
A Run time Error has occurred
Do you wish to Debug ?

Line:5
Error:'JSON' is undefined in yahoo messenger

Yes No
------------------

what should i do ? please help me !!

P.S : i reinstall yahoo messenger but this Error shown again !
3 answers 3