Aris Express won`t start on Mac El Capitan

Hi, 

After downloading, the startsequence halts with the Message, that Aris Express can`t be started: 

Exceptions: 

ava.lang.ClassCastException: java.util.HashMap cannot be cast to java.awt.RenderingHints

    at com.jidesoft.swing.JideSwingUtilities.<clinit>(Unknown Source)

    at com.jidesoft.plaf.vsnet.VsnetMetalUtils.initComponentDefaults(Unknown Source)

    at com.jidesoft.plaf.LookAndFeelFactory.installJideExtension(Unknown Source)

    at com.jidesoft.plaf.LookAndFeelFactory.installJideExtension(Unknown Source)

    at com.jidesoft.plaf.LookAndFeelFactory.installJideExtension(Unknown Source)

    at com.idsscheer.framework.gui.plaf.express.ADelegatingLookAndFeel.installLookAndFeel(Unknown Source)

    at com.idsscheer.framework.gui.plaf.express.ALookAndFeelHelper.installLookAndFeel(Unknown Source)

    at com.idsscheer.framework.gui.plaf.ALookAndFeel.installLookAndFeel(Unknown Source)

    at com.idsscheer.aris.client.container.controller.ALookAndFeelController.setLookAndFeel(Unknown Source)

    at com.idsscheer.aris.client.container.common.AARISClientContainer.setLookAndFeel(Unknown Source)

    at com.idsscheer.aris.client.container.common.AARISClientContainer.initLookAndFeel(Unknown Source)

    at com.idsscheer.aris.client.container.common.AARISClientContainer.init(Unknown Source)

    at com.idsscheer.aris.client.container.common.AARISClientContainer.init(Unknown Source)

    at com.idsscheer.aris.client.arisloader.AAbstactLoader.start(Unknown Source)

    at com.idsscheer.aris.expresslauncher.AExpressLauncher.startClient(Unknown Source)

    at com.idsscheer.aris.expresslauncher.AExpressLauncher.main(Unknown Source)

    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

    at java.lang.reflect.Method.invoke(Method.java:497)

    at com.sun.javaws.Launcher.executeApplication(Unknown Source)

    at com.sun.javaws.Launcher.executeMainClass(Unknown Source)

    at com.sun.javaws.Launcher.doLaunchApp(Unknown Source)

    at com.sun.javaws.Launcher.run(Unknown Source)

    at java.lang.Thread.run(Thread.java:745)

any Idea?

Regards

Michael Maaß