Comment #1 on issue 923 by benjamin...@gmail.com: EyeSee red-square-of-death from ESValueLabelDecorator>>chooseNonOverlappingValues http://code.google.com/p/moose-technology/issues/detail?id=923
Here is an example to isolate the problem from my own code...
The following works as expected... |diag| diag := ESDiagramRenderer new. (diag scatterplot) y: [ :x | x squared ]; x: #value; valueAxis; models: {1. 2. 3. 4. 5}. diag open
However replace with the line... y: [ :x | x squared negated ];
and you get the error