So, for the sake of a quick test, I commented out the code in
frmQueryBuilder::OnSize() and pgAdmin3 happily started to display the
query builder, but it crashed again. This time it gets a segfault in
wxListBase::GetFirst() const (this=0x30) at list.h:270 in list. I will
investigate further. Perhaps someone who is more familiar with the
Query Builder code can comment out the OnSize code and then debug this
second problem.
ahp