Bug in GEM1 NSHMP SE Asia ERF

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Steps to reproduce: (PLEASE FILL IN)

Other info: (PLEASE FILL IN)

Application: GEM1 NSHMP SE Asia ERF
Version: 1.3.1
Bulid Type: Development
Java Version: 1.8.0_51 (Oracle Corporation)
Operating System: Windows 8.1 (arch: amd64, version: 6.3)

Exception:

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
	at org.opensha.commons.util.ExceptionUtils.asRuntimeException(ExceptionUtils.java:26)
	at org.opensha.sha.earthquake.ERF_Ref.instance(ERF_Ref.java:245)
	at org.opensha.sha.gui.beans.ERF_GuiBean.getERFInstance(ERF_GuiBean.java:153)
	at org.opensha.sha.gui.beans.ERF_GuiBean.parameterChange(ERF_GuiBean.java:496)
	at org.opensha.commons.param.AbstractParameter.firePropertyChange(AbstractParameter.java:386)
	at org.opensha.commons.param.AbstractParameter.setValue(AbstractParameter.java:210)
	at org.opensha.commons.param.editor.AbstractParameterEditor.setValue(AbstractParameterEditor.java:75)
	at org.opensha.commons.param.editor.impl.ConstrainedStringParameterEditor.itemStateChanged(ConstrainedStringParameterEditor.java:99)
	at javax.swing.JComboBox.fireItemStateChanged(Unknown Source)
	at javax.swing.JComboBox.selectedItemChanged(Unknown Source)
	at javax.swing.JComboBox.contentsChanged(Unknown Source)
	at javax.swing.AbstractListModel.fireContentsChanged(Unknown Source)
	at javax.swing.DefaultComboBoxModel.setSelectedItem(Unknown Source)
	at javax.swing.JComboBox.setSelectedItem(Unknown Source)
	at javax.swing.JComboBox.setSelectedIndex(Unknown Source)
	at javax.swing.plaf.basic.BasicComboPopup$Handler.mouseReleased(Unknown Source)
	at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Sou