Total WAG, but maybe the reference to THISFORM is changed by the WAIT WINDOW. I'm not sure when the WITH object reference is resolved, but it may not be until it's first used, as opposed to at the WITH line.

You could try storing the THISFORM to a variable and using the variable in your WITH.

>In the Resize of my form I have:
>
>
>WITH ThisForm
>
>  WAIT WIND "Resize!" NOWAIT
>
>  .cntActionBar.Height = .Height - 30
>  .shpSplitter1.Height = .Height - 1
>  .cntTreeView.Height = .Height - 1
>  .shpSplitter2.Height = .Height - 1
>  .pgfPages.Height = .Height - 1
>  .pgfPages.Width = .Width - .shpSplitter2.Left - 2
>
>ENDWITH
>
>RETURN
>
>
>The Wait Window displays, but none of the objects are being resized.
>
>I also put a Wait Window in the Resize of the cntActionBar and it does
>NOT display. So why aren’t my controls resizing????