StreamingProviderBase-UnsubscribeFromStreamingBar-NotImplementedException

The exception is thrown by the default implementation of the method. This will happen if you indicated that you support streaming bars in your SDP, but you do not override the UnsubscribeFromStreamingBar method in your SDP class.

There were many exceptions with our custom Alor SDP. Since the developer stopped supporting it, I couldn't use it because of these exceptions.

While making tests with new Russian extension build I used my Alor SDP too. And it looks like all the exceptions are gone, although I did nothing for that (but installing new WL7 and your extensions). Was it you who fixed something to prevent some SDP exceptions or I just was lucky not to meet any exceptions while testing (and I'll surely meet them in the future). I'm not sure, I guess there were something about unsubscribing.

I don’t believe so.