this see ghosts hack crashes crossfire..... why?!?

void GhostMgr()
{

Value 300;

#include <windows.h>

#define GhostMgr 0xA021F8

void GhostMgr()
{
    DWORD CShell = NULL;
    do
    {
        CShell = (DWORD)GetModuleHandleA("CShell.dll");
        Sleep(100);
    }
    while (CShell == NULL);
    while (1)
    {
        CShell = (DWORD)GetModuleHandleA("CShell.dll");
        DWORD cGhostMgr = (DWORD)(CShell + GhostMgr);

        *(float*)(GhostMgr + 0x88) = 300;
        *(float*)(GhostMgr  + 0x8C) =  300;
        *(float*)(GhostMgr  + 0x90) =  300;

        Sleep(100);
    }
}

extern "C" __declspec(dllexport) BOOL APIENTRY DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
    if(fdwReason == DLL_PROCESS_ATTACH)
    {
        DisableThreadLibraryCalls(hinstDLL);
        CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)SeeGhosts, NULL, NULL, NULL);
        char msg[] = {'H', 'a', 'c', 'k', ' ', 'b', 'y', ' ', '_', 'c', 'o', 'r', 'n', '_', '\0'};
        char title[] = {'I', 'n', 'j', 'e', 'c', 't', 'e', 'd', '\0'};
        MessageBox(NULL, msg, title, MB_OK);
        return 0;
    }
    return 0;
}

 if(GhostMgr)
                {
                   *(float*)(GhostMgr + 0x88) = 300;
                   *(float*)(GhostMgr + 0x8C) = 300;
                   *(float*)(GhostMgr + 0x90) = 300;
                }