>Something is wrong in my IDE where each time I call MessageBox() the dialog box kept appearing slightly more to the right and lower on the screen, instead of centered like I thought it should appear.
>
>Now it is completely to the lower right hand corner of my screen.
>
>Have can I get it behaving correctly again?
>
>Oh, yeah... OS is Windows 10 Professional, 64 bit.

Did you try to trash foxuser.dbf?