expression in CONTAINS or MATCHES was a Boolean

  Explanation:  The Boolean evaluator was processing an expression
  or sub-expression of the form "A CONTAINS B" or "A MATCHES B".
  Either the "A" or the "B" expression was a Boolean of the form
  "NOT X", "X EQ Y", "X NE Y", "X LT Y", "X GT Y", "X LE Y", "X GE
  Y", "X CONTAINS Y", or "X MATCHES Y".  Neither side of CONTAINS
  and MATCHES expressions are allowed to be Boolean expressions.

  User Action:  Rewrite the expression to have the proper format.