every time I click "Mode use convex zone selection" button I get java warning dialog entitled: "PROBE". Dialog message starts with: "e=java.awt.event.ActionEvent[ACTION_PERFORMED,cmd=action.convexzone.UseCzSelection,when=1382695471154,modifiers=Button1] on javax.swing.JToggleButton[,88,86,81x37,alignmentX=0.0,alignmentY=0.5,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@71949b,flags=296 ..."
Convex zones are an experimental feature not yet fully developped. No surprise that a few things are not really working.