NeroFiddlesCOM.NET after burning does not exits

Hi there,

I am developing a burning app. using MS Visual Studio .NET 2003 -
Nero SDK 1.08, Nero 6 Ultra Edition and NeroVision 3.

When I run NeroFiddlesCOM.NET and exit, this app. exits ok, but
when I burn a cd/dvd (it burns ok) and I try to exit the main window
closes but the app. does not ends.

Any help?

Thanks.