Proposed conformance using HighGMAC

Hello

We have an application where we previously used version 8.2.0.3 of Gurux.DLMS. We then had the following code:

var gxdlmsClient = new GXDLMSSecureClient(true, 0x01, 0x01, Authentication.HighGMAC, authenticationSettings.UniqueSecret, InterfaceType.WRAPPER);
gxdlmsClient.LNSettings.SetConformanceBlock(new byte[] { 0x00, 0x1F, 0x1F });
gxdlmsClient.MaxReceivePDUSize = 0x00C8;
gxdlmsClient.Password = authenticationSettings.UniqueSecret.ToByteArray();
gxdlmsClient.Ciphering.SystemTitle = authenticationSettings.SystemTitle.ToByteArray();
gxdlmsClient.Ciphering.Security = Security.AuthenticationEncryption;
gxdlmsClient.Ciphering.AuthenticationKey = authenticationSettings.AuthenticationKey.ToByteArray();
gxdlmsClient.Ciphering.BlockCipherKey = authenticationSettings.UnicastKey.ToByteArray();

This week we have updated the version of Gurux.DLMS to Version 8.5.1709.1201. We see that we no longer can use gxdlmsClient.LNSettings.SetConformanceBlock. So instead we are setting the following property:

ProposedConformance = Conformance.Action |
Conformance.EventNotification |
Conformance.SelectiveAccess | Conformance.Set |
Conformance.Get | Conformance.InformationReport |
Conformance.MultipleReferences |
Conformance.BlockTransferWithAction |
Conformance.BlockTransferWithSetOrWrite |
Conformance.BlockTransferWithGetOrRead,

But when we try to run the application we get the error "Connection is permanently rejected. Authentication is required". Do you have any good ideas to how we can solve this problem?

Thanks
Andreas