We have recently upgraded to 2014. Some of our plans created in 2011, when opened in 2014 have most of the objects missing in the paperspace tabs. This includes lines, polylines, blocks, ole objects, jpgs, and plain text. These are not xref'd items. A few members of our staff have LT 2014 and have opened these same drawings with the same error. We can recover using 2011, but if we recover the drawings in 2014 it won't allow us to save!
Been searching the forums and net but can't find this exact problem. It's very frustrating!