GTA IV installation in Windows 8. Your system is incompatible with %P

If you try to install GTA IV on Windows 8 or 8.1 you will most probably get into this error:

Your system is incompatible with %P

Please follow the link bellow for more information.

GTA IV incompatible

To clear this error, you need to run the setup.exe file in Windows XP Service Pack 3 compatibility mode. For that: read more »