ArcBees/GWTP — pull request #196 by hpehl (2013-03-25 17:04:50+00:00)
Title: Unlock place manager when async calls fail. 

Related group posting: https://groups.google.com/forum/#!topic/gwt-platform/3VDf-eHzBi0

There's also another place where

c.g.m.c.proxy.Proxy.getPresenter(NotifyingAsyncCallback)

is called:

c.g.m.c.proxy.RevealContentHandler.onRevealContent(RevealContentEvent)

Not sure whether there should be the same error handling.