C / C++ / MFC

Heres the error:
First-chance exception at 0x7ca51406 in SiteConsole.exe: 
0xC0000005: 
Access violation reading location 0x016d4980.

Debugging hasn't lead me anywhere...

Heres the code: it's pretty straight forward.
void CExcludeDlg::OnBnClickedBImport()
{
	UpdateData(TRUE);

/* I can use either GetOpenFileName or CFileDialog and both cause the exception.
	OPENFILENAME ofn;
	TCHAR pszFile[MAX_PATH*2];

	_tcscpy(pszFile, _T("") );
	memset(&ofn, 0, sizeof(ofn));

	ofn.lStructSize = sizeof(ofn);    // I think this is the problem because of the SDK
	ofn.hwndOwner	= GetSafeHwnd();
	ofn.lpstrFile	= pszFile;
	ofn.nMaxFile	= sizeof(pszFile);
	ofn.Flags		= OFN_FILEMUSTEXIST | OFN_HIDEREADONLY | OFN_NONETWORKBUTTON | OFN_FILEMUSTEXIST;
	ofn.lpstrFilter = _T("All Files (*.*)\0*.*\0Executables (*.exe;*.ocx;*.dll)\0*.exe;*.ocx;*.dll\0");
	ofn.lpstrTitle	= _T("Please select a file");

	if (GetOpenFileName( &ofn ))
	{
		// I don't have to do anything it will still crash.
	}
*/	
	static char BASED_CODE szFilter[] = _T("Text File (*.txt)|*.txt||");
	CFileDialog m_ldFile(TRUE, _T(".txt"), NULL, OFN_HIDEREADONLY, szFilter);
	if (m_ldFile.DoModal() == IDOK)
	{
		// I don't have to do anything it will still crash.
	}

	UpdateData(FALSE);
}

/* A stupid array program that I made when I was bored one night */<br />
<br />
#include iostream  <br />
using namespace std;<br />
<br />
int main()<br />
{<br />
    const size_t arsize = 27;<br />
    int a[arsize] = {0,1,2,3,4,5,6,7,8,9,10,<br />
                     11,12,13,14,15,16,17,18,<br />
                     19,20,21,22,23,24,25,26,};<br />
                       <br />
    a[0] = 'a';  a[1] = 'b';<br />
    a[2] = 'c';  a[3] = 'd';<br />
    a[4] = 'e';  a[5] = 'f';<br />
    a[6] = 'g';  a[7] = 'h';<br />
    a[8] = 'i';  a[9] = 'j';<br />
    a[10] = 'k'; a[11] = 'l';<br />
    a[12] = 'm'; a[13] = 'n';<br />
    a[14] = 'o'; a[15] = 'p';<br />
    a[16] = 'q'; a[17] = 'r';<br />
    a[18] = 's'; a[19] = 't'; <br />
    a[20] = 'u'; a[21] = 'v';<br />
    a[22] = 'w'; a[23] = 'x';<br />
    a[24] = 'y'; a[25] = 'z';<br />
    a[26] = ' ';<br />
<br />
    int input; <br />
    string cool;<br />
    int end = 99;<br />
    <br />
    cout << "Programmed By Cody Rentschler\n" << endl;    <br />
    cout << "Alphabit Array testing." << endl;<br />
    cout << "Numbers 0 - 26 only." << endl;<br />
    cout << "Input 99 to exit out of loop." << endl;<br />
    <br />
    for (int can = 0; can != 1000000; cool.push_back(a[input]))<br />
        {<br />
             cin >> input;<br />
             cin.ignore(100,'\n');<br />
             if (input == end)    // To get out of for loop<br />
             {<br />
                       break;<br />
             }<br />
             <br />
             if (input > 26)<br />
             {<br />
                       cout << "Error: Number to big" << endl;<br />
                       cin.get();<br />
                       system("cls");<br />
                       return main();<br />
             }<br />
             <br />
             if (input < 0)<br />
             {<br />
                       cout << "Error: Number to small" << endl;<br />
                       cin.get();<br />
                       system("cls");<br />
                       return main();<br />
             }<br />
             ++can;<br />
             <br />
        }<br />
        <br />
        cout << "\n\n\n\n" << endl;<br />
        cout << cool << endl;<br />
        cin.get();<br />
  <br />
    <br />
    return 0;<br />
}