The "Show" button should not be enable when no data is available for the scalarbar
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
To reproduce the bug do:
Create Cone source + Apply Then in the property panel, click on the "Show" button in order to show the scalar bar.
If you notice, in the toolbar, the same button is disable but not here... This lead to an error message.