HOW-TO:Share libraries using MySQL: Wiki Edition
C:\Users\DG-Home\AppData\Roaming\Kodi\userdata is the correct location

special://xbmc/system/advancedsettings.xml is the "system" advancedsettings

special://profile/advancedsettings.xml is the userdata advancedsettings, the error indicates some sort of formatting error in the file, try opening and editing it with Notepad ++ paying particular attention to the opening and closing tags
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RE: HOW-TO synchronize XBMC between every room in the house: Wiki Edition - by Dilligaf - 2015-02-20, 16:33

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