>>>After the SET STEP ON executes the debugger comes up, but behind the debugger my application (the form that called the trace window) scrolls wildly.
>
>>The fields and labels on the form "scroll"?
>the whole form

The whole form...scrolls off the screen? I'm having a hard time pcituring this exactly. Can you duplicate it with simple form? Do you have any other interesting SETs?

>>Are you using the debugger in the vfp frame or in the debugger frame?
>I'm using VFP6

Okay, that's good to know. Service pack 5? But actually that wasn't my question. You can run the debugger in the VFP frame or in the debugger frame.