Visual Studio 2012 XAML Designer Exception

I'm trying to develop a windows store XAML application. However, I get an error when I open the XAML designer. The error is "System.Exception. Package failed updates, dependency or conflict validation. (Exception from HRESULT: 0x80073CF3)"

It's just a new blank application. It compiles and runs just fine. I'm using Visual Studio 2012 Ultimate on Windows 8 Professional N x64. VS is installed in the default directory with every module. I've tried to re-install VS and repair it but was unable to fix this error.

I solved it by regisering a developers account. I logged in via my @outlook.com and followed some simple steps after that which gave me a developers account for a month which made the error dissappear.

Hope it helps.