yeh make sure you have the corresponding version of crack for the version of the game you're using. ie if the game is v1.2, you need a cracked v1.2 .exe
best thing to do is reinstall the game to get the original .exe back, update the game by whatever means, then find/download a crack for the same version
i have the Titans and the latest version is v1.03, and there is also a crack for that version on megagames
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