After the window update, the visual studio can not open any project and the error message showed "'visual c++ package': failed to load ".
After search google and found the solution:

1. click the TOOLS--->VISUAL STUDIO COMMAND PROMPT   to open the command window
2. input the command "devenv /Setup"
3. open the visual studio 2012 again, it will works.

Help here: http://forum.nsst.co/threads/visual-c-package-failed-to-load-hiba-jav%C3%ADt%C3%A1sa.28/