Hello there. recently i have some problems with elements in the new version of EJS. I wanted to use elements how Tracker, and the console doesn't find some of these elements in "External" and "inputOutput".

In the console, appears some differents msgs of errors when I open this section's elements.

Exception in thread "AWT-EventQueue-0" java.lang.NoSuchMethodError: org.opensourcephysics.tools.ResourceLoader.getIcon(Ljava/lang/String;)Ljavax/swing/ImageIcon;
at es.uned.jchacon.model_elements.audio.AudioElement.(AudioElement.java:25)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.colos.ejs.osejs.edition.variables.ModelElementsPalette.instantiateModelElement(ModelElementsPalette.java:348)
at org.colos.ejs.osejs.edition.variables.ModelElementsPalette.readModelElements(ModelElementsPalette.java:287)
at org.colos.ejs.osejs.edition.variables.ModelElementsPalette.readElements(ModelElementsPalette.java:202)
at org.colos.ejs.osejs.edition.variables.ModelElementsPalette.access$1(ModelElementsPalette.java:173)
at org.colos.ejs.osejs.edition.variables.ModelElementsPalette$1.mousePressed(ModelElementsPalette.java:88)
at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
at java.awt.AWTEventMulticaster.mousePressed(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

Léo Rodrigues Macena dos Santos Departament of Physics - Faculdade de Ciências da Universidade do Porto.