Debug Assertion Failed!

I've got a program that works fine while i'm in the VC program, however, when I try to launch the .exe stand alone I get this nasty little message:

Debug Assertion Failed!
Program: C:\My.....
File: fseek.c
Line: 101
Expression: stream != NULL

I'm sure i'm just missing it. Maybe someone can suggest a better way to get i/p from a text file... Any help is appreciated...

Code:

---

void CPeekaViewDlg::OnGetit()
{
        UpdateData(TRUE);
       
        FILE *stream;
        char s[255];
        int i=74;
        int convert;
        stream=fopen("t2.tre","r");
        fseek(stream, i, SEEK_SET);
        fscanf(stream,"%s\n",s);
        m_crap = s;
        convert = atoi(s);
        if(convert>9)
        {
                i += 3;
        }
        if(convert<9)
        {
                i += 2;
        }
        fseek(stream, i, SEEK_SET);
        fscanf(stream,"%s\n",s);
        m_show = s;


        fclose(stream);

        UpdateData(FALSE);

}

---

:p

my guess, t2.tre does not exist in the same directory. errno will be nonzero if fopen fails and strerr(errno) will proablably have a semi informative message.

The file is present and has data. In fact, the code actually works, but only while the program is compiled/linked/ran from the VC++ program....

It truns out that a full path is needed.

stream=fopen("c:/mydocu~1/programming/peekaview/t2.tre","r");


Thanks...