[02/03] Sometimes my app displays error when it exits

[anna7]

Hi,

Sometimes my app displays error when it exits. It is developed in VB.NET 2003 and I use 3rd party components. They do not have any news that this error comes from their components.

I don't know where and wich is the problem. I reviewed sometimes the code. All code is in "Try...Catch....Finally" but it doesn't catch the error.

This error it displays when I debug the application :

"An unhandled exception of type 'System.NullReferenceException' occurred
in system.windows.forms.dll

Additional information: Object reference not set to an instance of an
object."

And this is the error that displays in the Pc where the app is installed:

unknown software exception (0*c0020001) occurred in the application at location 0*7c812a5b

I would be grateful for any help.

Regards