This is not an error we have had reported, and searching in the net indicates that it is caused by the google web toolkit and an improperly configured IE instance: https://groups.google.com/forum/#!topic/Google-Web-Toolkit/xf7Hv0pVHu4
. Could you see if this is your case and let me know? Another thing I can suggest is adding an x-ua compatible meta tag witha value "edge" so that IEs try to stay in standards mode.
If this does not help, what I can advise is that you first try the Q3 2013 SP2 release that went out this week, and if that does not help - send us a sample page where the problem can be reproduced on standard IE installations with our controls. We would need to examine such a peculiar problem before we can offer a concrete answer.
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