your files is GAKUOBAm , the .exe extension doesn't show since windows hide know extension.
Simplifying the thing, you have GAKUOBAm.exe but windows show GAKUOBAm;
you apply the crack, GAKUOBAm.exe is renamed to GAKUOBAm.old, and a new modified GAKUOBAm.exe is created but you can't notice the difference;
GAKUOBAm.old is unknown to windows so the extension is show and the icon image isn't extracted, you see only a white icon.
It's good pratice to change your folder preferences and tell windows to don't hide know extension.
edit: sorry, i don't have this game for a check....