How to fix Microsoft Baseline Security Reports files – Unable to get property of “text” of underlined or null reference
I have investigated this issue and find out that the only reason why this is failing is badly formatted XML structure in the report files.
Edit you report files and make sure that all <Check> are closed by </Check> and all <Details> are closed by </Details>
The easiest way is to install Notepad ++ and XML Tools plugins and use brackets and start closing checks. Once this is done it will display normally.
You can also use any validation online tool such as http://www.xmlvalidation.com/index.php?id=1&L=0
but this may give a wrong info about the line number. As long as it display any errors it will not correctly on the reports view in Microsoft Baseline Security Reports.