>I've seen this happening when the column had the focus when the user clicked on the X-button. Could this be the case here?

Hi Christoff:

That's a good idea... I tried but you know. When a test a program always works well...

Perhaps it's not a click on X button but an accidental reset

I think I programmed "ON SHUT DOWN CLOSE..." or so... Do you know any other way for shutting down? I'm trying to think about any accidental click or keypress but I don't imagine how

Now I remenber that error happened to me when I was developping and I thought it was memory. It's been long time since I don't have such error.

It's a misterious

I thank you very much for your attention.

Héctor