10.3 Cannot add layer directly from a map

[reyemtm]

It worked in 10.2, but in ArcMap 10.3, I cannot add layers directly from the map. This means I have to export all my layers first - as I often use definition queries and turn fields off - then convert the exported files. Any ideas? It seems like it would be something simple.

One or more of the dropped items were invalid and will not be added to the control.