Error creating new channel

[krstev89]

Hi.
With the latest version of UA client I have the following error:

Error Code: -2147467261-
Error: Object reference not set to an instance of an object. System.NullReferenceException: Object reference not set to an instance of an object.

this._channel = new ClientSessionChannel(
appDescription,
certificateStore,
this.userIdentity,
this.Info.discoveryUrl,
SecurityPolicyUris.None,
null,
uaTcpSessionChannelOptions
);

User identity is set with username and password, and also tried with all the security policies and received always the same error.
After this we cannot open the channel.

await this._channel.OpenAsync();

It fails all the time because the channel is null.