Need help with GTK bug

Hi Andreas,

I could use some help with a GTK related bug if you can spare some time
please.

The bug in question is listed in BUGS.txt as: Menu item 'Query Browser'
causes Segfault under unix - crash after qbForm->Show() in
frmQueryBuilder::OnSize() at layout.LayoutMDIFrame(this). QB currently
disabled.

The error is caught by an assert in src/gtk/window.cpp on line 2875:

wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );

which was indirectly called by pgAdmin in frmQueryBuilder.cpp, line 512:

void frmQueryBuilder::OnSize(wxSizeEvent& event)
{
    if (this->GetClientWindow() != NULL) {
    wxLayoutAlgorithm layout;
>>>    layout.LayoutMDIFrame(this);
    }
}

Any ideas?

Thanks, Dave.