Kepler

Upon starting Kepler, the following error appears on the console:

Exception trying to create an Action for classname: <org.kepler.gui.RunWithFeedbackChkBoxAction>

This is caused by a circular reference. KeplerMenuHandler.pack() executes

[1] menuMapper = new MenuMapper((TableauFrame) t)

The call to the MenuMapper constructor eventually leads to calling the contructor for class RunWithFeedbackChkBoxAction. This latter constructor executes

[2] MenuMapper menuMapper = (MenuMapper) parent.getAlternateTopPack()
.getObject(null);

In [2], parent.getAlternateTopPack() returns the same instance of KeplerMenuHandler which is still executing [1], and the call to getObject(null) returns menuMapper which is null since statement [1] has not yet completed. A null pointer exception is thrown. The Animate at Runtime item does not appear in the Tools menu.