After upgrading from 4.0.0-774 to 4.1.0-868 my client app gets this when connecting to the server.

java.lang.IllegalArgumentException: null arg
at com.prosysopc.ua.stack.application.Application.addApplicationInstanceCertificate(SourceFile:92)
at com.prosysopc.ua.client.UaClient.A(SourceFile:5729)
at com.prosysopc.ua.client.UaClient.connect(SourceFile:857)
.
.
I assume that this is caused by the ApplicationIdentity used not having a defined KeyPair, but why is the KeyPair mandatory also when using SecurityMode.NONE ?
Prior to version 4.1 the code worked well without having to set a KeyPair.

Here is a simplified version of the sourceCode used (none of the uppercase arguments are null):
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UaClient myClient = new UaClient(SERVER_URI);

ApplicationDescription appDescription = new ApplicationDescription();
appDescription.setApplicationName(new LocalizedText(APPLICATION_NAME, Locale.ENGLISH));
appDescription.setApplicationUri(APPLICATION_URI);
appDescription.setProductUri(PRODUCT_URI);
appDescription.setApplicationType(ApplicationType.Client);

ApplicationIdentity identity = new ApplicationIdentity();
identity.setApplicationDescription(appDescription);
identity.setOrganisation(ORGANIZATION);
myClient.setApplicationIdentity(identity);

myClient.setLocale(Locale.ENGLISH);
myClient.setTimeout(CONNECTION_TIMEOUT);
myClient.setSecurityMode(SecurityMode.NONE);

UserIdentity userIdentity= new UserIdentity(USERNAME, PASSWORD);
myClient.setUserIdentity(userIdentity);
myClient.connect(); // The IllegalArgumentException is thrown here.
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