We have a unique problem only while chatting using IPAD. When you first launch the browser and go to initiate a support chat (as the end user) it places you in the queue.
This pops on the agent side and they have the chance to accept / reject. When the agent accepts the session, however, it is not changing the window on the web chat client side. It leaves them in a spinning waiting for an agent to answer state.
Error in IPAD: The specified call count is not a number (/dwr/call/plaincall/room.getChatQueue.dwr)