Alex,

This *IS* pretty freaky behavior! Other than what Jason suggested, I'm not sure what would be causing this (possibly a VFP issue?). At any rate, if I were you, I'd try removing the controls from page 4 (and pasting them onto a temporary form) to see if that solves the problem.

You could also set a breakpoint on page 4's Deactivate (or possibly one of the control's on page 4's UIEnable event) to see what's causing the page to lose focus.

Regards,