Bug 241209 [Markers] [Problems View] Changing columns in the preferences makes errors disappear from the view
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ExtendedMarkersView.java
}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.part.ViewPart#saveState(org.eclipse.ui.IMemento)
	 */
	public void saveState(IMemento memento) {
		super.saveState(memento);
		memento.putString(TAG_GENERATOR, builder.getGenerator().getId());
		memento.putString(TAG_PART_NAME, getPartName());
		if (!getCategoriesToExpand().isEmpty()) {
			IMemento expanded = memento.createChild(TAG_EXPANDED);
			Iterator categories = getCategoriesToExpand().iterator();
			while (categories.hasNext()) {
				expanded.createChild(TAG_CATEGORY, (String) categories.next());
			}
		}
		IMemento columnEntry = memento.createChild(TAG_COLUMN_WIDTHS);
		MarkerField[] fields = new MarkerField[viewer.getTree()
				.getColumnCount()];
		int[] positions = viewer.getTree().getColumnOrder();
		for (int i = 0; i < fields.length; i++) {
			TreeColumn column = viewer.getTree().getColumn(i);
			columnEntry.putInteger(getFieldId(column), column.getWidth());
			fields[positions[i]] = (MarkerField) column.getData(MARKER_FIELD);
		}
		builder.saveState(memento, fields);
	}
	/**