.Net Framework 4.5.2 on Windows 10 RTP 10049

I have been playing with Windows 10 RTP on my laptop for a few weeks now. It is not recommended to install it on a production laptop, but I thought installing it on a virtual machine will not give me much chance to test it, so yeah… had a few problems here and there, like virtual box installation causing black login screen, audio plays up a little bit, unable to install Live Writer anymore, but so far nothing really major causing me cannot work until today…. .Net Framework 4.5.2 won't install!!!!!

I was playing inside Visual Studio 2013, checking my console target framework, found it to be 4.5.1, so went down to select 4.5.2, nothing! So I click on Install Other Frameworks. Visual Studio 2013 brought me to download .Net Framework 4.5.2 web installer - NDP452-KB2901954-Web. Attempted to install it, had an error message saying .Net Framework 4.5.2 or later version has already been installed. Attempted to download the offline version NDP452-KB2901907-x86-x64-AllOS-ENU, still had the same error. Eventually, managed to find this Developer Pack (NDP452-KB2901951-x86-x64-DevPack) found here http://www.microsoft.com/en-us/download/details.aspx?id=42637 , installation went successful and I can continue my work.