>This is a problem correlated with the processing of the
>- threads of VFP,
>- send of message to the ActiveX and the WINDOW where the ActiveX.Object live.
>
>If the process does not have free time of CPU, can occurs that it comes lost some message,
>with DOEVENTS you force the process to free a small time,
>and the message of selection of the node comes sended.
>
>We would have to put DOEVENTS in many other places,
>why what today it works tomorrow could not work.

This is probably the reason of the behavior. Thanks for the explanations.