JAL-3032 check enough sequences selected on construction

diff --git a/src/jalview/gui/CalculationChooser.java b/src/jalview/gui/CalculationChooser.java
index a79169a..a3f2c8e 100644 (file)
--- a/src/jalview/gui/CalculationChooser.java
+++ b/src/jalview/gui/CalculationChooser.java
@@ -293,6 +293,7 @@ public class CalculationChooser extends JPanel
       };
     });
 
+    validateCalcTypes();
     frame.setLayer(JLayeredPane.PALETTE_LAYER);
   }