First of all, you don't need the minor version .2 I don't believe.
Second, if they installed LT after the full version you could have a registry problem and the repair registry of autocad will clear that up.
I've had problems with autodesk software Inventor, Autocad, ADT, Mechanical, etc. Messing the registry up of earlier installs. Microsoft products may do the same thing.
Just a few years ago, If we had a tech support call, one of the first things asked was "Did you install MS Office after you installed autocad?"