Also seeing similar errors in IE8 when hitting Unbounce page directly (so I don’t think it’s an iframe issue):

Webpage error details

Message: Script error

Line: 0

Char: 0

Code: 0

URI: http://d2xxq4ijfwetlm.cloudfront.net/…

Message: ‘window.ub.page’ is null or not an object

Line: 786

Char: 1

Code: 0

URI: http://offer.theblaze.com/blazetv-ifr…