expression in AND, OR, or NOT was not a Boolean

  Explanation:  The Boolean evaluator was processing an expression
  or subexpression of the form "A AND B", "A OR B", or "NOT A".
  Either the "A" or the "B" expression was not in the proper form.
  The correct forms are "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".
  The operand of NOT, and both sides of AND and OR expressions,
  must be Boolean expressions.

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