LogoutOtherClients problem with list Users subscription  #1540

Server exception while using LogoutOtherClients with subscription to list of Users, Meteor 0.6.6.2

Example here : https://github.com/zapaz/meteor-logoutotherclients-bug

=> Meteor server running on: http://localhost:3000/
I2052-14:07:47.004(1)? Exception in queued task: Error: Could not find element with id SbG7ENEu78wQ7eSzd to change
I2052-14:07:47.056(1)? at .extend.changed (packages/livedata/livedata_server.js:176)
I2052-14:07:47.057(1)? at .extend.changed (packages/livedata/livedata_server.js:341)
I2052-14:07:47.057(1)? at .extend.changed (packages/livedata/livedata_server.js:927)
I2052-14:07:47.057(1)? at cursor.observeChanges.changed (packages/mongo-livedata/collection.js:237)
I2052-14:07:47.057(1)? at packages/mongo-livedata/mongo_driver.js:971
I2052-14:07:47.057(1)? at Array.forEach (native)
I2052-14:07:47.057(1)? at Function..each..forEach (packages/underscore/underscore.js:79)
I2052-14:07:47.058(1)? at Object.self.callbackMultiplexer.(anonymous function) as changed
I2052-14:07:47.058(1)? at packages/minimongo/diff.js:28
I2052-14:07:47.058(1)? at Function..each..forEach (packages/underscore/underscore.js:87)