License initialization error

sometimes, it could go through, but there are errors show up below

Apr 01, 2018 10:54:26 PM java.util.prefs.WindowsPreferences openKey
WARNING: Could not open windows registry node Software\JavaSoft\Prefs\com.eviware.soapui./Soap/U/I at root 0x80000001. Windows RegOpenKey(...) returned error code 1018.
Apr 01, 2018 10:54:28 PM java.util.prefs.WindowsPreferences openKey
WARNING: Could not open windows registry node Software\JavaSoft\Prefs\com.eviware.soapui./Soap/U/I at root 0x80000001. Windows RegOpenKey(...) returned error code 1018.
Apr 01, 2018 10:54:29 PM java.util.prefs.WindowsPreferences openKey
WARNING: Could not open windows registry node Software\JavaSoft\Prefs\com.eviware.soapui./Soap/U/I at root 0x80000001. Windows RegOpenKey(...) returned error code 1018.
Apr 01, 2018 10:54:31 PM java.util.prefs.WindowsPreferences openKey
WARNING: Could not open windows registry node Software\JavaSoft\Prefs\com.eviware.soapui./Soap/U/I at root 0x80000001. Windows RegOpenKey(...) returned error code 1018.
22:54:31,148 DEBUG [LicenseManagerServiceImpl] Valid license file found: C:\Users\qa_test_automation\.soapui\soapui.key, last modified: Fri Nov 04 12:21:36 PDT 2016
Apr 01, 2018 10:54:32 PM java.util.prefs.WindowsPreferences openKey
WARNING: Could not open windows registry node Software\JavaSoft\Prefs\com.eviware.soapui./Soap/U/I at root 0x80000001. Windows RegOpenKey(...) returned error code 1018.
22:54:32,706 WARN  [LicenseManagerServiceImpl] Failed to save trial version.
java.util.prefs.BackingStoreException: flush(): Backing store not available.
	at java.util.prefs.WindowsPreferences.flush(Unknown Source)
	at com.eviware.soapui.support.preferences.UserPreferences.setVersionForProLicense(UserPreferences.java:155)
	at com.smartbear.ready.license.LicenseManagerServiceImpl.f(LicenseManagerServiceImpl.java:500)
	at com.smartbear.ready.license.LicenseManagerServiceImpl.doInitLicenseSupport(LicenseManagerServiceImpl.java:97)
	at com.smartbear.ready.license.LicenseManagerServiceBase.initLicenseSupport(LicenseManagerServiceBase.java:25)
	at com.smartbear.ready.license.LicenseManagerServiceImpl.initLicenseSupport(LicenseManagerServiceImpl.java:141)
	at com.smartbear.ready.license.CombinedSoapUILicenseManagerService.doInitLicenseSupport(CombinedSoapUILicenseManagerService.java:59)
	at com.smartbear.ready.license.LicenseManagerServiceBase.initLicenseSupport(LicenseManagerServiceBase.java:25)
	at com.smartbear.ready.license.CombinedSoapUILicenseManagerService.initLicenseSupport(CombinedSoapUILicenseManagerService.java:67)
	at com.smartbear.ready.license.CombinedSoapUILicenseManagerService.isLicenseValid(CombinedSoapUILicenseManagerService.java:74)
	at com.smartbear.ready.license.util.LicenseUtil.hasLicenseWithSmartBearEmail(LicenseUtil.java:329)
	at com.smartbear.ready.core.analytics.AnalyticsInitializer.initializeAnalytics(AnalyticsInitializer.java:55)
	at com.smartbear.ready.core.analytics.AnalyticsInitializer$$FastClassByGuice$$2120b2ca.invoke(<generated>)
	at com.google.inject.internal.SingleMethodInjector$1.invoke(SingleMethodInjector.java:54)
	at com.google.inject.internal.SingleMethodInjector.inject(SingleMethodInjector.java:89)
	at com.google.inject.internal.MembersInjectorImpl.injectMembers(MembersInjectorImpl.java:132)
	at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:120)
	at com.google.inject.internal.ConstructorInjector.access$000(ConstructorInjector.java:33)
	at com.google.inject.internal.ConstructorInjector$1.call(ConstructorInjector.java:95)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:115)
	at com.netflix.governator.LifecycleListenerModule$LifecycleListenerProvisionListener.onProvision(LifecycleListenerModule.java:51)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:126)
	at com.netflix.governator.guice.InternalLifecycleModule.onProvision(InternalLifecycleModule.java:65)
	at com.google.inject.internal.ProvisionListenerStackCallback$Provision.provision(ProvisionListenerStackCallback.java:126)
	at com.google.inject.internal.ProvisionListenerStackCallback.provision(ProvisionListenerStackCallback.java:68)
	at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:92)
	at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:268)
	at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
	at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
	at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:194)
	at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
	at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:205)
	at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:199)
	at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1085)
	at com.google.inject.internal.InternalInjectorCreator.loadEagerSingletons(InternalInjectorCreator.java:199)
	at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:180)
	at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110)
	at com.google.inject.internal.InjectorImpl.createChildInjector(InjectorImpl.java:232)
	at com.netflix.governator.guice.LifecycleInjector.createChildInjector(LifecycleInjector.java:331)
	at com.netflix.governator.guice.LifecycleInjector.createInjector(LifecycleInjector.java:411)
	at com.netflix.governator.guice.LifecycleInjector.createInjector(LifecycleInjector.java:352)
	at com.smartbear.ready.cmd.runner.AbstractSoapUIRunner.a(AbstractSoapUIRunner.java:278)
	at com.smartbear.ready.cmd.runner.AbstractSoapUIRunner.initAfterPropertiesSet(AbstractSoapUIRunner.java:98)
	at com.smartbear.ready.cmd.runner.AbstractSoapUIRunner.run(AbstractSoapUIRunner.java:256)
	at com.smartbear.ready.cmd.runner.AbstractSoapUIRunner.runFromCommandLine(AbstractSoapUIRunner.java:164)
	at com.smartbear.ready.cmd.runner.pro.SoapUIProTestCaseRunner.init(SoapUIProTestCaseRunner.java:81)
	at com.smartbear.ready.cmd.runner.pro.SoapUIProTestCaseRunner.main(SoapUIProTestCaseRunner.java:77)
22:54:32,716 DEBUG [LicenseManagerServiceImpl] Trying to initialize license for LoadUI