The cause of this issue could be due to a wrong or missing pen reference. A common cause for a missing pen reference is when you bring an older pen set into a newer version of ArchiCAD. For instance in ArchiCAD 9 international version pen 19 was white and in ArchiCAD 11 it is Pink. To resolve this issue you can try going into the Window Selection settings - > Parameters - > 2D representation - > Then look for
"Fill Set" and make sure its set to on. Then double check that all your pens are referencing a working pen color.