To install or upgrade the software in case it has previously been installed with an installer run the installer as an administrator (right mouse click in Explorer, "Run as administrator").
Operating system: Windows XP, 7, 8 2003, 2008, 2010
Manual install instructions
First you need to install a proper environment:
You find detailed instructions for installation and upgrading in the installation manual in the documentation area.
Operating system: Linux, Mac OS/X