Trying to Access to the cheat menu causes my emulator to shut down!

It just started yestesday. I am using the correct Emulator with the correct settings for a Pokemon Platinum game whom I've been playing sucessfully over a week, with cheats enabled.

And suddenly, today, as I open my game, when I tried to access to my cheat menu via the toorbar or via thr F2 on my keyboard, the emulator just...vanishes. No error menu, no black screen. It just go, 'poof', out of my view. I tried it repeartly but it's the same. I hit F2: the emulator vanishes. I try to access to the cheat menu via the toolbar; the emulator vanishes. Basically, it shuts itself down everytime I try to access the cheat menu. It was like as if it reads the cheat menu as the 'close' opinon.

Do anyone know how to fix it?

 

Get the usercheat.dat from GBATemps temporary cheat area.

cheats.gbatemp.net/temp I think.