Required prerequisites can be found on the ftp server: ftp.xcelgo.com
They should, ideally, be installed before Experior is installed.
Under the Prerequisites folder are three folders containing the software you might need to install.
Microsoft .NET 4.0 – This one is mandatory and should always be installed.
Microsoft DirectX 9.0c – Even if DirextX 10/11 is already installed.
NVIDIA PhysX – This only needs installing if your graphics chipset is not NVIDIA, for example it may be ATI. Otherwise updating your NVIDIA drivers will always give you the latest version of the PhysX software.