Hi, I've been having crysis 1 for a long time. I've been playing on windows 8 smoothly 2-5 days ago but that all changed when, yesterday, I got this message:

"This application is not compatible with the installed operating system. Please upgrade to Windows 98SE, Windows 2000 or better"

WTF?! I was playing it like 2 days ago. Nothing happen, no windows update, no added files to the crysis directory, what gives!?

Someone else having this problem? If so, how can I fix it
I've already tried uninstalling crysis and re-installing it. (btw I have the physical disc copy)

Specs:
Windows 8 64-bit
Intel Core i7 950 @ 3.07GHz
8GB Ram
Nvidia Geforce 560ti

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