After you installed DivX Software (standard free of charge DivX package4 including codec, player, evaluation version of converter etc.) your Internet Explorer may start to display following error message directly after browser start or while surfing:
The error message:
Message: 'JSON' is undefined
Somehow DivX Internet Explorer add-ons caused this message: after we disabled them – everything started to work as before.
There are numerous articles in internet describing alternative ways – up to changing code of a web site and so on, but what code do you expect in about:blank ?