C2012   LOOP statement with no loop in sight

     Explanation:  You specified a LOOP statement outside of a DO WHILE
     or FOR loop.  LOOP statements are valid only between a DO WHILE and an
     ENDDO statement or between a FOR and a NEXT statement.  This type of
     error usually occurs because of a nesting error when specifying control
     structures.

     Action:  Check the flow of control in your program's logic for a
     missing DO WHILE or FOR statement above the erroneous LOOP statement, or
     remove the erroneous statement.