When opening Vizit Pro in IE9 RTM, the product does not completely load and the following errors can be seen in the Console output in the IE Developer Tools:
Unable to get value of the property 'enableDisplayMode': object is null or undefined
Object doesn't support property or method 'createContextualFragment'
This is a known issue in the current release of Vizit and will be addressed in 4.0. To work around this issue, please set your browser to IE9 Compatibility View and IE8 Standards for Browser Mode and Document Mode respectively.