Invalid filter expression: (left(Index,1)<>"C".and.left(Index,1)<>"T".and.left(Index,4)<>"MSET") .and. (((left(index,1)="M".and.category_description<>"Music").or.(left(index,3)="SET".and.left(CD_index,4)="MSET")).and.left(Index,1)<>"C".and.left(Index,1)<>"T".and.left(Index,4)<>"MSET")