A user was using IE browser when they received this error while attempting to download an attachment. When she clicks on the attachment link, a window pops up, but it's just a blank (white) page with nothing on it. When they click refresh, it displays the error above. They claim this worked before (I don't have any issues with it), but it only happened recently when she updated Java (version higher than 6). She has no issues with it when using Firefox.
Does anyone know what's going on?