The issue was a "<Leave>" binding  on another widget that then executed a grab. 
I had go through an use a process of elimination while comparing 2 versions and 
the differences between those versions.

Moral of the story know what you are grabbing.

Thanks,
gary 

--- On Wed, 6/29/11, Jeff Hobbs <[email protected]> wrote:

> From: Jeff Hobbs <[email protected]>
> Subject: Re: Toplevel Minimizing not working.
> To: "gary sachs" <[email protected]>
> Cc: [email protected]
> Date: Wednesday, June 29, 2011, 10:25 AM
> On 28/06/2011 8:25 AM, gary sachs
> wrote:
> > AS Perl V5.12 Tcl V8.5.9 Windows XP SP3
> >
> > I have recently discovered that I doing something in
> my code or using
> > code from a module that disables the ability to
> minimize toplevel
> > widgets/windows (thanks to the suggestions out in PERL
> MONKS). But
> > unfortunately I am unsure what to be looking for? What
> callback would
> > I look for? Is there a binding I should be looking at?
> Can I modify
> > the platform specific system menu? How do I reset the
> Minimize
> > button? Are any of these possible? The maximize and
> Close buttons
> > work fine.
> 
> I would look for any 'wm' commands, or '<Unmap>'
> bindings.
> 
> Jeff
> 

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