NullPointer on ReadyAPI startup - Macbook 10.13.3 OS

I had ReadyAPI setup and working fine on my macbook which has 10.13.3 OS and Java 8... 

I'm not sure what changed, but all of a sudden I cannot start ReadyAPI up any more... I see this error in the error.log file:
/Applications/ReadyAPI-2.3.0.app/Contents/java/app/bin/error.log

Any help in resolving this would be greatly appreciated!  Thanks.

May 03, 2018 8:57:41 AM com.google.inject.internal.MessageProcessor visit
INFO: An exception was caught and reported. Message: java.lang.NullPointerException
java.lang.NullPointerException
	at java.awt.Window.init(Window.java:497)
	at java.awt.Window.<init>(Window.java:537)
	at java.awt.Frame.<init>(Frame.java:420)
	at java.awt.Frame.<init>(Frame.java:385)
	at javax.swing.SwingUtilities$SharedOwnerFrame.<init>(SwingUtilities.java:1758)
	at javax.swing.SwingUtilities.getSharedOwnerFrame(SwingUtilities.java:1833)
	at javax.swing.JOptionPane.getRootFrame(JOptionPane.java:1696)
	at javax.swing.JOptionPane.getFrameForComponent(JOptionPane.java:1612)
	at com.jp.protection.gui.dialogs.LicenseErrorDialog.<init>(LicenseErrorDialog.java:49)
	at com.jp.protection.gui.dialogs.DefaultLicenseAdapter.<init>(DefaultLicenseAdapter.java:56)
	at com.jp.protection.pub.launch.ProtectionLauncher.initLicenseListener(ProtectionLauncher.java:128)
	at com.jp.protection.pub.launch.HeadlessProtectionLauncher.init(HeadlessProtectionLauncher.java:189)
	at com.jp.protection.pub.launch.ProtectionLauncher.init(ProtectionLauncher.java:113)
	at com.smartbear.ready.license.protection.HeadlessProtectionLauncherAdapter.init(HeadlessProtectionLauncherAdapter.java:94)
	at com.smartbear.ready.license.protection.SoapuiProtectionSupport.a(SoapuiProtectionSupport.java:126)
	at com.smartbear.ready.license.protection.SoapuiProtectionSupport.initProtectionLauncher(SoapuiProtectionSupport.java:105)
	at com.smartbear.ready.license.protection.SoapuiProtectionSupport.<init>(SoapuiProtectionSupport.java:72)
	at com.smartbear.ready.license.LicenseModule.configure(LicenseModule.java:29)
	at com.google.inject.PrivateModule.configure(PrivateModule.java:100)
	at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:340)
	at com.netflix.governator.guice.BootstrapBinder.install(BootstrapBinder.java:203)
	at com.smartbear.ready.license.headless.HeadlessLicenseInitializerModule.configureModule(HeadlessLicenseInitializerModule.java:47)
	at com.smartbear.ready.license.LicenseInitializerModule.configureModule(LicenseInitializerModule.java:31)
	at com.smartbear.ready.license.headless.HeadlessLicenseInitializerModule.configure(HeadlessLicenseInitializerModule.java:34)
	at com.netflix.governator.guice.InternalBootstrapModule.configure(InternalBootstrapModule.java:95)
	at com.google.inject.AbstractModule.configure(AbstractModule.java:62)
	at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:340)
	at com.google.inject.spi.Elements.getElements(Elements.java:110)
	at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:138)
	at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:104)
	at com.google.inject.Guice.createInjector(Guice.java:99)
	at com.google.inject.Guice.createInjector(Guice.java:84)
	at com.netflix.governator.guice.LifecycleInjector.<init>(LifecycleInjector.java:437)
	at com.netflix.governator.guice.LifecycleInjectorBuilderImpl.build(LifecycleInjectorBuilderImpl.java:313)
	at com.smartbear.ready.ui.ReadyApiMain.main(ReadyApiMain.java:80)
	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:498)
	at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:65)
	at com.install4j.runtime.launcher.MacLauncher.main(MacLauncher.java:67)