FYI - Sometimes when running an analysis the calculation to set the color of a box in the view (Roassal/Mondrian ?) gets messed up because the result of the MONLinearColorNormalizer>>#minimumValue: send is 'Float infinity negated' I'd guess that for that method you'd never want it to be below 0 or at least bounded in some fashion.. I have not seen the error happen twice in a row.