batch manager unable to open the models in solidworks plastics

Hi,

I want to set up some jobs, which has solid mesh, using batch manager in SW plastics.  I tried to open the folder 'plate' containing all the jobs i want to run.  Although, 'plate' has the sub  folders of the various models, i cant see reach them (notice 'plate' doesn't show the + sign to its left, whereas the folder above it shows the + sign).  Is it because batch manager works for Shell mesh only and i am trying to open solid mesh?  In any case, shouldn't i be able to navigate to the sub-folder?

Nikhil