Page Attributes in IE9

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I found this thread here, which solved the same problem I'm having:

http://www.concrete5.org/developers/bugs/5-5-1/custom-attributes-bo...

HOWEVER, I'm not really sure exactly what I need to do to fix this? There are several posts in here that all say different things. Can someone let me know exactly what I need to do to fix this? I can't wait until the next release since my client needs to be able to edit their pages! ;-)

Thanks!

leinteractive