First and foremost, many thanks to Joe Cheng of the Microsoft LiveWriter team for rushing through his burrito to help me out. LiveWriter for 64bit platforms (Windows XP 64, Vista Business, etc) installs a slightly different version of LiveWriter and while my 32bit versions were able to post successfully to Movable Type (our blog engine), the 64bit version would give me weird and wonderful errors. New t First and foremost, many thanks to Joe Cheng of the Microsoft LiveWriter team for rushing through his burrito to help me out. LiveWriter for 64bit platforms (Windows XP 64, Vista Business, etc) installs a slightly different version of LiveWriter and while my 32bit versions were able to post successfully to Movable Type (our blog engine), the 64bit version would give me weird and wonderful errors.New to the 64bit version is a richer selection of multimedia handlers (video, tags, etc) and more blog engine specific items (like the split post aka ‘more’) button that’s oh so important in blog engines like WordPress to avoid clogging up your front page with long posts. Additional plugins are appearing rapidly.So getting to the point, the solution is that the registry entries for LiveWriter64 are case sensitive (though registry entries normally are NOT case sensitive) due to some hashing algorithms. So fire up ‘regedit’ and navigate to: HKEY_CURRENT_USERSoftwareWindows Live WriterWeblogssome long alphanumeric value assigned to the particular blogUserOptionOverrides Then you need to change the subkey of:UserOptionOverrides => subkey characterset => characterSet You first MUST change characterset to something like ‘foo’ and THEN change it to characterSet otherwise it will give you a duplicate subkey error. The subkey MUST be blank/null so don’t add anything.Hope this helps out my fellow bloggers as they migrate from a 32bit Windows platform to one of the newer 64bit platforms.Brian Chee Technorati Tags: LiveWriter, blogger, movable type, wordpress, blog tool, blog errors, 64bit Technology Industry