Hi Alex,
I have already planned to migrate my tools to use Roassal... But for now I have to use what we have with Mondrian because we are preparing an evaluation on our tool in Pharo1.4.
I suddenly have a problem that I do not know to detect I draw a map with dominanceTreeLayout or forcedBaseLayout. When the layout is dominanceTreeLayout I am getting the red rectangle with the cross. Sometimes i get it immediately or sometimes I see part of the visualization and when i move the scrollbars the red rectangle appears.
How can I debug that?, I haven't changed my code and I have no idea what is failing now if I open the same visualization with forcedBaseLayout it works fine.
Regards, Veronica