Yes, of course:

Qt Code: 
  1. QList< File* > BaseModel::cleanSelection( QModelIndexList &selection ) const
  2. {
  3.     /* We want to filter the index list here, since we cannot allow a selection to contain both
  4.     root items and children of those root items. Here we traverse the list, filtering out any
  5.     children who's parents are also in the list */
  6.  
  7.     QMutableListIterator< QModelIndex > it( selection );
  8.     QList< File* > files;
  9.  
  10.     while( it.hasNext() ){
  11.         QModelIndex idx = it.next();
  12.         BaseType *base = static_cast< BaseType* >( idx.internalPointer() );
  13.  
  14.         if( base->type() == "File" ){
  15.             File *file = dynamic_cast< File* >( base );
  16.  
  17.             if( file ){
  18.                 //If the current files parent is also in the list, then we don't want to process it
  19.                 if( selection.indexOf( index( downloadqueue->indexOf( file->parent() ), 0 ) ) != -1 ){
  20.                     files.append( file );
  21.                     it.remove();
  22.                 }
  23.             }
  24.         }
  25.     }
  26.  
  27.     return files;
  28. }
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It crashes on line 21, it.remove().
This code is being called from here:

Qt Code: 
  1. void KNewzModel::moveToTop()
  2. {
  3.     QModelIndexList selection = view->selectionModel()->selectedRows();
  4.  
  5.     if( selection.size() < 1 )
  6.         return;
  7.  
  8.     QList< File* > files = cleanSelection( selection );
  9.     QMutexLocker lock( &downloadqueue->mutex() );
  10.     QModelIndex rootIdx = index( 0, 0 );
  11.     QModelIndex childIdx = index( 0, 0, rootIdx );
  12.  
  13.     foreach( const QModelIndex &idx, selection ){
  14.         BaseType *base = static_cast< BaseType* >( idx.internalPointer() );
  15.  
  16.         if( base->type() == "NzbFile" ){
  17.             NzbFile *nzbFile = dynamic_cast< NzbFile* >( base );
  18.  
  19.             if( !nzbFile )
  20.                 break;
  21.  
  22.             //No need to move the first item to the top, it's there already
  23.             if( nzbFile == downloadqueue->first() )
  24.                 continue;
  25.  
  26.             int row = downloadqueue->indexOf( nzbFile );
  27.             Q_ASSERT( row >= 0 && row < downloadqueue->size() );
  28.             QModelIndex idx = index( row, 0 );
  29.             bool expanded = view->isExpanded( idx );
  30.             beginRemoveRows( QModelIndex(), row, row );
  31.             nzbFile = downloadqueue->takeAt( row );
  32.             int rows = nzbFile->size();
  33.             endRemoveRows();
  34.             row = rootIdx.row();
  35.             beginInsertRows( QModelIndex(), row, row );
  36.             downloadqueue->insert( row, nzbFile );
  37.             endInsertRows();
  38.             QModelIndex newIdx = index( row, 0 );
  39.             emit dataChanged( newIdx, index( rows, columnCount(), newIdx ) );
  40.  
  41.             if( files.size() > 0 ){
  42.                 File *firstChild = nzbFile->first();
  43.  
  44.                 /* Check if any children were selected. We can't just ignore them now,
  45.                     because this action can legally operate on both children and their top-level
  46.                     parent simultaneously */
  47.                 QMutableListIterator< File* > it( files );
  48.  
  49.                 while( it.hasNext() ){
  50.                     File *file = it.next();
  51.  
  52.                     if( file->parent() == nzbFile ){
  53.                         it.remove();
  54.                         int row = nzbFile->indexOf( file );
  55.  
  56.                         if( row >= 0 && row < nzbFile->size() ){
  57.                             beginRemoveRows( newIdx, row, row );
  58.                             file = nzbFile->takeAt( row );
  59.                             endRemoveRows();
  60.                             row = nzbFile->indexOf( firstChild );
  61.  
  62.                             if( row < 0 )
  63.                                 row = 0;
  64.  
  65.                             beginInsertRows( newIdx, row, row );
  66.                             nzbFile->insert( row, file );
  67.                             endInsertRows();
  68.                             emit dataChanged( index( row, 0, newIdx ), index( row, columnCount(), newIdx ) );
  69.                         }
  70.                     }
  71.                 }
  72.             }
  73.  
  74.             if( expanded )
  75.                 view->setExpanded( newIdx, true );
  76.         }else{
  77.             File *file = dynamic_cast< File* >( base );
  78.             NzbFile *nzbFile = file->parent();
  79.             int row = nzbFile->indexOf( file );
  80.  
  81.             /* We want row > 0 here because we don't need to move the first child
  82.                to the top since it's already there */
  83.             if( row > 0 && row < nzbFile->size() ){
  84.                 QModelIndex parentIdx = index( downloadqueue->indexOf( nzbFile ), 0 );
  85.                 Q_ASSERT( parentIdx.isValid() );
  86.                 beginRemoveRows( parentIdx, row, row );
  87.                 file = nzbFile->takeAt( row );
  88.                 endRemoveRows();
  89.                 beginInsertRows( parentIdx, 0, 0 );
  90.                 nzbFile->prepend( file );
  91.                 endInsertRows();
  92.                 emit dataChanged( index( 0, 0, parentIdx ), index( 0, columnCount(), parentIdx ) );
  93.             }
  94.         }
  95.  
  96.     }
  97.  
  98.     view->selectionModel()->clearSelection();
  99. }
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