Thank you very much indeed, your answer is perfect for our needs. marco

Hi. I have a faulty app that I should restart whenever it crashes. I can easily see when it's dead, since it creates a named mutex that disappear with the app. My problem is that if the app crashes and shows a MessageBox as this example: The instruction at "0x004015b0" referenced memory at "0x00000000". The memory could not be "written". Click on OK to terminate the program Click on CANCEL to debug the program Is there any way to avoid this? I can't modify the darned app's source code. thanks in advance, bye M.