remove: - microsoft .net framework 4 client profile - microsoft .net framework 4 extended - microsoft .net framework 4.5.1 - microsoft visual c++ 2010 x86 redistributable - microsoft visual c++ 2012 x86 redistributable restart your pc, download the installationwizard from here run it as administrator. after the wizard is done, run windows update. And install all updates for .net & c++ restart download a clean install of DB run diablo3 and demonbuddy as administrator.
What ever that did, it worked, Although I didnt have the first 3 files you listed, werent on my comp, only the last two, and for some reason I had a chineese or jab version of the last one as well as an english version wounder if that was the issue..