WindowFXConfig The parameter is incorrect.

Hi guys,
I received an error message while running WindowFX 5 Beta on my machine running with Windows 7 Service Pack 1 Ultimate 32-bit, 512 MB of NVIDIA GeForce 8600M GT and DirectX10.
It is indicating about the parameter as incorrect. Look at the screenshot below.
Have you any idea for the issue?
Please help.
Thanks in advance.

WindowFXConfig
The parameter is incorrect.
