This is exactly what I had asked the experts on Microsoft CRM 2011 forums and as expected the advise flooded. One very useful advise was a link to the KB article on Microsoft's Support Site KB/2743941.
I haven't yet tried to upgrade to UR/12 but I'm confident.
|I would receive this error when trying to attach a file. Whether I try to click 'Send Error' or 'Don't Send', another similar popup would appear indefinitely.|