I am working with a set of files from an Italian company.  When opening some assembly drawings there will be empty spaces in the bill of materials.  Right clicking on the spaces will give me information on what should be there, but I am unable to get anything to display.

When I open the files, before it has a chance to rebuild, it will display the full bill of materials.  After the opening rebuild, the empty spaces appear.

The assembly files open without any error messages.