Dialogue Extension on Build 10495

When I try to enable the dialogue extension with build 10495 or the data structures extension, I get an error message that says to report the error to the forum. Do I need to update the extension to get it to work or something?

java.lang.NoClassDefFoundError: com/polydes/common/ui/darktree/DTreeNodeCreator
   at java.base/java.lang.ClassLoader.defineClass1(Native Method)
   at java.base/java.lang.ClassLoader.defineClass(Unknown Source)
   at java.base/java.security.SecureClassLoader.defineClass(Unknown Source)
   at java.base/java.net.URLClassLoader.defineClass(Unknown Source)
   at java.base/java.net.URLClassLoader$1.run(Unknown Source)
   at java.base/java.net.URLClassLoader$1.run(Unknown Source)
   at java.base/java.security.AccessController.doPrivileged(Native Method)
   at java.base/java.net.URLClassLoader.findClass(Unknown Source)
   at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
   at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
   at java.base/java.lang.ClassLoader.defineClass1(Native Method)
   at java.base/java.lang.ClassLoader.defineClass(Unknown Source)
   at java.base/java.security.SecureClassLoader.defineClass(Unknown Source)
   at java.base/java.net.URLClassLoader.defineClass(Unknown Source)
   at java.base/java.net.URLClassLoader$1.run(Unknown Source)
   at java.base/java.net.URLClassLoader$1.run(Unknown Source)
   at java.base/java.security.AccessController.doPrivileged(Native Method)
   at java.base/java.net.URLClassLoader.findClass(Unknown Source)
   at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
   at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
   at com.polydes.dialog.DialogExtension.onGameWithDataSaved(DialogExtension.java:164)
   at stencyl.sw.ext.GameExtension.onGameSave(GameExtension.java:323)
   at stencyl.sw.ext.GameExtension.installForGame(GameExtension.java:251)
   at stencyl.sw.app.ExtensionManager.enableExtension(ExtensionManager.java:272)
   at stencyl.sw.ext.ExtensionDependencyManager.enable(ExtensionDependencyManager.java:309)
   at stencyl.sw.ext.AddonPage$1.mousePressed(AddonPage.java:92)
   at java.desktop/java.awt.Component.processMouseEvent(Unknown Source)
   at java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source)
   at java.desktop/java.awt.Component.processEvent(Unknown Source)
   at java.desktop/java.awt.Container.processEvent(Unknown Source)
   at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source)
   at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
   at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)
   at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
   at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
   at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
   at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
   at java.desktop/java.awt.Window.dispatchEventImpl(Unknown Source)
   at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)
   at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
   at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
   at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
   at java.base/java.security.AccessController.doPrivileged(Native Method)
   at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
   at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
   at java.desktop/java.awt.EventQueue$5.run(Unknown Source)
   at java.desktop/java.awt.EventQueue$5.run(Unknown Source)
   at java.base/java.security.AccessController.doPrivileged(Native Method)
   at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
   at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
   at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
   at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
   at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
   at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
   at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
   at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: com.polydes.common.ui.darktree.DTreeNodeCreator
   at java.base/java.net.URLClassLoader.findClass(Unknown Source)
   at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
   at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
   ... 56 more