>I've added the _mouseover class to a form; the form runs in a top-level form. The form works fine when running along, but when I run it as part of the app, or exe, it behaves oddly.
>
>If I mouse over the navigation controls that use the effects, and then use the "X" to close the form, the X suddenly disables (and the CLOSE is gone from the Windows menu). If I place the mouse back over one of the other controls I get:
>
>Data type mismatch
>highlightme
>Line 34
>
>Line 34 is:
>
>WITH This.oHost
>
>then a string of successive error messages appears, each relating to the various expressions inside the WITH.
>
>After adding the mouseover effects class I added cancelhighlight to the control container and the form (something that is not used in TASTRADE). And I also added this code to prevent disabled controls from being highlighted:
>
>*MouseMove of each button
>if thisform._datanavbtns1.cmdtop.enabled=.t.
>THISFORM._mouseOverFX1.HighlightMe(this)
>endif
>
>Any ideas how I can resolve this?


Sounds like you have a hanging object reference some where in your code. Be sure to NULL out any stored object references you may have in your form destroy event.