This class is missing documentation.
Copy and paste the text below and save to HelpSource/Classes/MustBeBooleanError.schelpTITLE:: MustBeBooleanError summary:: (put short description here) categories:: Undocumented classes related:: Classes/SomeRelatedClass, Reference/SomeRelatedStuff, etc. DESCRIPTION:: (put long description here) CLASSMETHODS:: INSTANCEMETHODS:: METHOD:: errorString (describe method here) returns:: (describe returnvalue here) EXAMPLES:: code:: (some example code) ::