Nesting error (Error 96)

One of these situations has been encountered:

• A DO is present without a matching ENDDO or vice versa
  
  
• A SCAN is present without a matching ENDSCAN or vice versa
  
  
• A FOR is present without a matching ENDFOR or vice versa
  
  
• A LOOP or EXIT clause is present outside the DO WHILE ... ENDDO, FOR ... ENDFOR, or SCAN ... ENDSCAN commands.