Everynow and then I try to insert a file I received from a customer into a drawing file, and it doesn't work. The green load bar on the bottom continuously fills up and empties, and the part keeps switching from under defined to overdefined. It gets stuck in this loop, and I can't do anything but close and re-open Solidworks. Does anyone know how to fix this?

Also, on a side note, I've been looking into ways to increase my speed when detailing. Does anyone know if there is a way to map symbols like Counterbore or Diameter to keys, or even a macro that I could run while writing notes? I get tired of diving into the list of symbols everytime.