Hmm, I had the same problems in the VFP 6 when some timer fires ;)

When timer event fired, all objects expanded collapsed automatically, arrays shown weird behaviour in the watches/locals window. Source code disappeared in trace window for the time timer event worked, than appeared again when timer event finished (with incorrect scrolling).

All looks much similar. Do you have timer working during debuggin?

>-I seem to have a few small problems with the debugger.
>Stuff in the watch window suddenly disappears and repears.
>Everytime I try to copy a watch variable it disappears while you are copying it.
>Also when I put in thisform and expand it it shows the variable above it instead of the usual object properties until I de-expand it and then re-expand again.
>
>Anyone else notice this...
>
>On the otherhand I have not gotten any c0005 errors in the debugger yet...
>
>
>-I wanted to report this "Bug" but I still have not ever got onto the
>beta.visualstudio.net site. Can anyone else get there? Maybe it's my firewall.
>
>They make it just a little too hard to report the bugs. Maybe this is on purpose.
>
>-I recompiled my app with VFP 7 is it just me or is it way faster?