I tries Kevin, but I haven't found the problem, it suddenly gets out of The VFP Environment. I'm going to try to load the Pageframe object with a first page on it... maybe it will work. I'll let you know

>Have you tried tracing in the Activate event to see
>where to problem is?
>
>I dont see anything in your code that would cause a
>problem.
>
>In the program where you define the Page class, add this:
>
>PROCEDURE Activate
>  SET STEP ON
>ENPROC
>
>Then trace it through from there