Getting Application Error while using thread

[kvingupta]

prepared a program in which download file from the url.
it uses the MS-ITC control.
the program executed with the help of thread and show progress bar.
the dtrange thing is that some time is executed and some time it doesn't.
and when we make the exe it shows the "application Error..........."
and show the dialog box saying that send or don't send.

please assist me to solve the problem.

thankx in advance.

Vinay Gupta