Finally tracked it down... this is caused by a race condition wherein the server refers to an object that the client has deleted, but the server hasn't yet received notification about. The culprit is in the BaseConnection class: the code for waiting on "pending proxies".
Finally tracked it down... this is caused by a race condition wherein the server refers to an object that the client has deleted, but the server hasn't yet received notification about. The culprit is in the BaseConnection class: the code for waiting on "pending proxies".