Combo fix error recognizing operating system

Hi there,
I have this weird error in Combo Fix. It seems like is not supporting Windows 8 (x32) even the error says that it is OK with Windows 8. Can anyone help me please with this error ? What is wrong with my Windows 8 ?
Thank you experts !

ComboFix
This operating system is not supported:
ComboFix only runs on:
*Windows XP (32BIT)
* Windows Vista (32/64 bit)
* Windows 7 (32/64 bit)
* Windows 8 (32/64 bit)
Windows 2000 is no longer supported.
