Hi fowardbias,
sounds like you are running Windows and it got an attribute set like system or archive and windows is not allowing you to change it.
Open up a console (DOS) from the run window, type cmd in XP or command on earlier windows, change directories to the PBP root directory then type attrib -r -a -s -h *.inc , that will remove all attributes set in all the .inc files. OR FROM within windows rt click the file, scroll to properties and uncheck the attributes which cause your pain.