CFileDialog error on close program (This applcation has requested the runtime to terminate...)

Hello

I have taken over the development of a older utility (+5 years) from anther developer that no longer works for our company. (I am unfamiliar with base code)

I am developing in VS6 with SP6, on Windows vista fully updated.
I am NOT using dot.net

I put a browse button on the main dialog and created a function that invokes a CFileDialog open dialog. My code for the CFileDialog is very standard (included below) and I have used in other programs with out any problems. I do not believe the problem is in my CFileDialog code.

I run the utility and click the button to invoke the CFileDialog select a file and click OK. So far so good no errors. I update the file, save and close it. On close of the program I get the following error message. (I have included a screen shot)

"This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support time for more information.  "

Other things that I have tried
- I restart the utility then click close immediately, No Error
- I restart the utility do some work then close the utility, No Error.
- I comment out the CFileDialog  code and hard code the path to the file push the button. Correct results, No Error.
- The debugger in Visual studios 6 does not seem to catch this error and closes normally after I click OK on the error message.
- I tried to replace the CFileDialog with a GetOpenFileName and I still get the same error.
- I created anther utility that uses the exact same CFileDialog code, ran and closed the utility with no problems.
 
This happens every time I invoke a CFileDialog with this utility.
I have tried cleaning and rebuilding all the source code in release and debug.

I am running out of ideas here, what else should I try?
Suggestions, comments? Start Free Trial

1:
2:
3:
4:
5:

char szFilters[]= "FH Firmware (*.bin)|*.bin|All Files (*.*)|*.*||";
CFileDialog pFileDialog(TRUE, NULL, NULL, OFN_HIDEREADONLY|OFN_FILEMUSTEXIST, szFilters, this);
if( pFileDialog.DoModal() == IDOK) {
	m_strPath.Format( "%s", pFileDialog.GetPathName() );
}