This issue is caused by the fact that removal of chat is done by an instance of MessageModule which does not exist when the account is disabled/disconnected as its instance may not exists.

Will need to look for good solutions to change this behavior without creating a race condition.

I've fixed this issue but need to test it more extensively before releasing a build with this fix.

Release a beta or something like this, so we all can test it before going public.

%kobit I've just released the first beta for 3.0. It is not complete version (still a few task are waiting for this version) and is not 100% stable but it works ok for testing purposes.

Wojtek, as you reported this issue I'm assigning it back to you for verification. For me this works just fine.

Works.