ContributionsMost RecentMost LikesSolutionsRe: How to avoid soapUI exceptions during startup? I have similar thing, my soapUI is 5.3.0, my machine is Mac OS Mojave. I used to be able to start up soapUI, but I cannot now. I follow the above suggestion to move the plugin jars from gchen/.soapuios/plugins directory to soapUI5.3.0/Content/java/app/bin/ext directory and I still cannot start up soapUI. The soapUI-errors.log has following errors: ERROR [errorlog] java.lang.ClassNotFoundException: com.eviware.soapui.plugins.auto.factories.AutoDiscoveryMethodFactory java.lang.ClassNotFoundException: com.eviware.soapui.plugins.auto.factories.AutoDiscoveryMethodFactory at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:190) at com.eviware.soapui.plugins.LoaderBase.loadAutoFactories(LoaderBase.java:112) at com.eviware.soapui.plugins.LoaderBase.loadFactories(LoaderBase.java:80) at com.eviware.soapui.plugins.PluginLoader.loadPluginFactories(PluginLoader.java:141) at com.eviware.soapui.plugins.PluginLoader.loadPlugin(PluginLoader.java:104) at com.eviware.soapui.plugins.PluginLoader.loadPlugin(PluginLoader.java:54) at com.eviware.soapui.plugins.PluginManager.doInstallPlugin(PluginManager.java:141) at com.eviware.soapui.plugins.PluginManager.access$600(PluginManager.java:43) at com.eviware.soapui.plugins.PluginManager$LoadPluginsTask.computeSequentially(PluginManager.java:420) at com.eviware.soapui.plugins.PluginManager$LoadPluginsTask.compute(PluginManager.java:377) at com.eviware.soapui.plugins.PluginManager$LoadPluginsTask.compute(PluginManager.java:382) at com.eviware.soapui.plugins.PluginManager$LoadPluginsTask.compute(PluginManager.java:365) at java.util.concurrent.RecursiveTask.exec(RecursiveTask.java:93) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:334) at java.util.concurrent.ForkJoinWorkerThread.execTask(ForkJoinWorkerThread.java:604) at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:784) at java.util.concurrent.ForkJoinPool.work(ForkJoinPool.java:646) at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:398) Any suggestion how to fix it? Thanks a lot !