Melvin,

At the command window try:

_screen.tmrSuperClass.Enabled = .F.

I suspect you are running SuperCls and the timer is interfering with the Debug window.

HTH

Rex

>I am been having failure attempts to use the Debug Window with MMF at runtime. The Debug Window jitters and does not allow me to manipulate the windows in real-time. At times, an action takes seconds to minutes to execute. I am having all types of errors. A stable Debug Window could provide me with an opportunity to analyze the problems.
>
>I will appreciate all suggestions.
>
>Thanks...
>Melvin...